The family of Aaron was grouped as follows: Aaron’s sons were Nadab, Abihu, Eleazar, and Ithamar. Nadab and Abihu died before their father and left no sons. So Eleazar and Ithamar filled the office of priest. David assigned Zadok from the family of Eleazar and Ahimelech from the family of Ithamar and assigned them to separate divisions for carrying out their appointed ministries. It turned out that there were more leaders in Eleazar’s family than in Ithamar’s and so they divided them proportionately: sixteen clan leaders from Eleazar’s family and eight clan leaders from Ithamar’s family. They assigned the leaders by lot, treating both families alike, for there were officials of the sanctuary and officials of God among both the Eleazar and Ithamar families. The secretary Shemaiah son of Nethanel, a Levite, wrote down their names in the presence of the king, the officials, Zadok the priest, Ahimelech son of Abiathar, and the leaders of the priestly and Levitical families. They took turns: One family was selected from Eleazar and then one from Ithamar. The first lot fell to Jehoiarib, the second to Jedaiah, the third to Harim, the fourth to Seorim, the fifth to Malkijah, the sixth to Mijamin, the seventh to Hakkoz, the eighth to Abijah, the ninth to Jeshua, the tenth to Shecaniah, the eleventh to Eliashib, the twelfth to Jakim, the thirteenth to Huppah, the fourteenth to Jeshebeab, the fifteenth to Bilgah, the sixteenth to Immer, the seventeenth to Hezir, the eighteenth to Happizzez, the nineteenth to Pethahiah, the twentieth to Jehezkel, the twenty-first to Jakin, the twenty-second to Gamul, the twenty-third to Delaiah, and the twenty-fourth to Maaziah. They served in this appointed order when they entered The Temple of God, following the procedures laid down by their ancestor Aaron as God, the God of Israel, had commanded him. The rest of the Levites are as follows: From the sons of Amram: Shubael; from the sons of Shubael: Jehdeiah. Concerning Rehabiah: from his sons, Isshiah was the first. From the Izharites: Shelomoth; from the sons of Shelomoth: Jahath. The sons of Hebron: Jeriah the first, Amariah the second, Jahaziel the third, and Jekameam the fourth. The son of Uzziel: Micah, and from the sons of Micah: Shamir. The brother of Micah was Isshiah, and from the sons of Isshiah: Zechariah. The sons of Merari: Mahli and Mushi. The son of Jaaziah: Beno. The sons of Merari from Jaaziah: Beno, Shoham, Zaccur, and Ibri. From Mahli: Eleazar, who had no sons. From Kish: Jerahmeel, the son of Kish. And from the sons of Mushi: Mahli, Eder, and Jerimoth. These were the Levites by their families. They also cast lots, the same as their kindred the sons of Aaron had done, in the presence of David the king, Zadok, Ahimelech, and the leaders of the priestly and Levitical families. The families of the oldest and youngest brothers were treated the same.
1 Chronicles 24:1‭-‬31 MSG
https://bible.com/bible/97/1ch.24.1-31.MSG

When David got to be an old man, he made his son Solomon king over Israel. At the same time he brought together all the leaders of Israel, the priests, and the Levites. The Levites thirty years and older were counted; the total was thirty-eight thousand. David sorted them into work groups: “Twenty-four thousand are in charge of administering worship in the sanctuary; six thousand are officials and judges; four thousand are security guards; and four thousand are to serve in the orchestra, praising God with instruments that I have provided for praise.” David then divided the Levites into groupings named after the sons of Levi: Gershon, Kohath, and Merari. The Gershonites: Ladan and Shimei. The three sons of Ladan: Jehiel, Zetham, and Joel. The three sons of Shimei: Shelomoth, Haziel, and Haran, all heads of the families of Ladan. The four sons of Shimei: Jahath, Ziza, Jeush, and Beriah. Jahath came first, followed by Ziza. Jeush and Beriah did not have many sons so they were counted as one family with one task. The four sons of Kohath: Amram, Izhar, Hebron, and Uzziel. The sons of Amram: Aaron and Moses. Aaron was especially ordained to work in the Holy of Holies, to burn incense before God, to serve God and bless his Name always. This was a permanent appointment for Aaron and his sons. Moses and his sons were counted in the tribe of Levi. The sons of Moses: Gershom and Eliezer. Shubael was the first son of Gershom. Rehabiah was the first and only son of Eliezer; but though Eliezer had no other sons, Rehabiah had many sons. Shelomith was the first son of Izhar. Hebron had four sons: Jeriah, Amariah, Jahaziel, and Jekameam. Uzziel had two sons: Micah and Isshiah. The sons of Merari: Mahli and Mushi. The sons of Mahli: Eleazar and Kish. Eleazar died without any sons, only daughters. Their cousins, the sons of Kish, married the daughters. Mushi had three sons: Mahli, Eder, and Jerimoth. These are the sons of Levi twenty years and older, divided up according to families and heads of families and listed in the work groups that took care of the worship in the sanctuary of God. David said, “Now that the God of Israel has given rest to his people and made Jerusalem his permanent home, the Levites no longer have to carry the Tabernacle and all the furniture required for the work of worship.” These last words of David referred only to Levites twenty years old and above. From now on the assigned work of the Levites was to assist Aaron’s sons in the work of worship in God’s house: maintain courtyards and closets, keep the furniture and utensils of worship clean, take care of any extra work needed in the work of worship, and provide bread for the table and flour for the Meal Offerings and the unraised wafers—all baking and mixing, all measuring and weighing. Also they were to be present for morning prayers, thanking and praising God, for evening prayers, and at the service of Whole-Burnt-Offerings to God on Sabbath, at New Moons, and at all festivals. They were on regular duty to serve God according to their assignment and the required number. In short, the Levites, with the sons of Aaron as their companions in the ministry of holy worship, were responsible for everything that had to do with worship: the place and times and ordering of worship.
1 Chronicles 23:1‭-‬32 MSG
https://bible.com/bible/97/1ch.23.1-32.MSG

This is really short, so I’ll do another one.

That spring, the time when kings usually go off to war, Joab led the army out and ravaged the Ammonites. He then set siege to Rabbah. David meanwhile was back in Jerusalem. Joab hit Rabbah hard and left it in ruins. David took the crown off the head of their king. Its weight was found to be a talent of gold and set with a precious stone. It was placed on David’s head. He hauled great quantities of loot from the city and put the people to hard labor with saws and picks and axes. This is what he did to all the Ammonites. Then David and his army returned to Jerusalem. Later war broke out with the Philistines at Gezer. That was the time Sibbecai the Hushathite killed Sippai of the clan of giants. The Philistines had to eat crow. In another war with the Philistines, Elhanan son of Jair killed Lahmi, the brother of Goliath the Gittite whose spear was like a ship’s boom. And then there was the war at Gath that featured a hulking giant who had twenty-four fingers and toes, six on each hand and foot—yet another from the clan of giants. When he mocked Israel, Jonathan son of Shimea, David’s brother, killed him. These came from the clan of giants and were killed by David and his men.
1 Chronicles 20:1‭-‬8 MSG
https://bible.com/bible/97/1ch.20.1-8.MSG

Some time after this Nahash king of the Ammonites died and his son succeeded him as king. David said, “I’d like to show some kindness to Hanun son of Nahash—treat him as well and as kindly as his father treated me.” So David sent condolences about his father’s death. But when David’s servants arrived in Ammonite country and came to Hanun to bring condolences, the Ammonite leaders warned Hanun, “Do you for a minute suppose that David is honoring your father by sending you comforters? Don’t you know that he’s sent these men to scout out the city and size it up so that he can capture it?” So Hanun seized David’s men, shaved them clean, cut off their robes halfway up their buttocks, and sent them packing. When this was all reported to David, he sent someone to meet them, for they were seriously humiliated. The king told them, “Stay in Jericho until your beards grow out; only then come back.” When it dawned on the Ammonites that as far as David was concerned, they stank to high heaven, they hired, at a cost of a thousand talents of silver (thirty-seven and a half tons!), chariots and horsemen from the Arameans of Naharaim, Maacah, and Zobah—thirty-two thousand chariots and drivers; plus the king of Maacah with his troops who came and set up camp at Medeba; the Ammonites, too, were mobilized from their cities and got ready for battle. When David heard this, he dispatched Joab with his strongest fighters in full force. The Ammonites marched out and spread out in battle formation at the city gate; the kings who had come as allies took up a position in the open fields. When Joab saw that he had two fronts to fight, before and behind, he took his pick of the best of Israel and deployed them to confront the Arameans. The rest of the army he put under the command of Abishai, his brother, and deployed them to deal with the Ammonites. Then he said, “If the Arameans are too much for me, you help me; and if the Ammonites prove too much for you, I’ll come and help you. Courage! We’ll fight might and main for our people and for the cities of our God. And God will do whatever he sees needs doing!” But when Joab and his soldiers moved in to fight the Arameans, they ran off in full retreat. Then the Ammonites, seeing the Arameans run for dear life, took to their heels and ran from Abishai into the city. So Joab withdrew from the Ammonites and returned to Jerusalem. When the Arameans saw how badly they’d been beaten by Israel, they picked up the pieces and regrouped; they sent for the Arameans who were across the river; Shophach, commander of Hadadezer’s army, led them. When all this was reported to David, he mustered all Israel, crossed the Jordan, advanced, and prepared to fight. The Arameans went into battle formation, ready for David, and the fight was on. But the Arameans again scattered before Israel. David killed seven thousand chariot drivers and forty thousand infantry. He also killed Shophach, the army commander. When all the kings who were vassals of Hadadezer saw that they had been routed by Israel, they made peace with David and served him. The Arameans were afraid to help the Ammonites ever again. * * *
1 Chronicles 19:1‭-‬2‭, ‬2‭-‬19 MSG
https://bible.com/bible/97/1ch.19.1-19.MSG

After the king had made himself at home, he said to Nathan the prophet, “Look at this: Here I am comfortable in a luxurious palace of cedar and the Chest of the Covenant of God sits under a tent.” Nathan told David, “Whatever is on your heart, go and do it; God is with you.” But that night, the word of God came to Nathan, saying, “Go and tell my servant David, This is God’s word on the matter: You will not build me a ‘house’ to live in. Why, I haven’t lived in a ‘house’ from the time I brought up the children of Israel from Egypt till now; I’ve gone from one tent and makeshift shelter to another. In all my travels with all Israel, did I ever say to any of the leaders I commanded to shepherd Israel, ‘Why haven’t you built me a house of cedar?’ “So here is what you are to tell my servant David: The God-of-the-Angel-Armies has this word for you: I took you from the pasture, tagging after sheep, and made you prince over my people Israel. I was with you everywhere you went and mowed your enemies down before you; and now I’m about to make you famous, ranked with the great names on earth. I’m going to set aside a place for my people Israel and plant them there so they’ll have their own home and not be knocked around anymore; nor will evil nations afflict them as they always have, even during the days I set judges over my people Israel. And finally, I’m going to conquer all your enemies. “And now I’m telling you this: God himself will build you a house! When your life is complete and you’re buried with your ancestors, then I’ll raise up your child to succeed you, a child from your own body, and I’ll firmly establish his rule. He will build a house to honor me, and I will guarantee his kingdom’s rule forever. I’ll be a father to him, and he’ll be a son to me. I will never remove my gracious love from him as I did from the one who preceded you. I will set him over my house and my kingdom forever; his throne will always be there, rock solid.” Nathan gave David a complete and accurate report of everything he heard and saw in the vision. King David went in, took his place before God, and prayed: Who am I, my Master God, and what is my family, that you have brought me to this place in life? But that’s nothing compared to what’s coming, for you’ve also spoken of my family far into the future, given me a glimpse into tomorrow and looked on me, Master God, as a Somebody. What’s left for David to say to this—to your honoring your servant, even though you know me, just as I am? O God, out of the goodness of your heart, you’ve taken your servant to do this great thing and put your great work on display. There’s none like you, God, no God but you, nothing to compare with what we’ve heard with our own ears. And who is like your people, like Israel, a nation unique on earth, whom God set out to redeem as his own people (and became most famous for it), performing great and fearsome acts, throwing out nations and their gods left and right as you saved your people from Egypt? You established for yourself a people—your very own Israel!—your people forever. And you, God, became their God. So now, great God, this word that you have spoken to me and my family, guarantee it forever! Do exactly what you’ve promised! Then your reputation will be confirmed and flourish always as people exclaim, “The God-of-the-Angel-Armies, the God over Israel, is Israel’s God!” And the house of your servant David will remain rock solid under your watchful presence. You, my God, have told me plainly, “I will build you a house.” That’s how I was able to find the courage to pray this prayer to you. God, being the God you are, you have spoken all these wonderful words to me. As if that weren’t enough, you’ve blessed my family so that it will continue in your presence always. Because you have blessed it, God, it’s really blessed—blessed for good!
1 Chronicles 17:1‭-‬10‭, ‬10‭-‬27 MSG
https://bible.com/bible/97/1ch.17.1-27.MSG