He appointed the priests to their duties

1 Chronicles 24:1-19
These were the divisions of the descendants of Aaron. The sons of Aaron were Nadab, Abihu, Eleazar, and Ithamar. / But Nadab and Abihu died before their father did, and they had no sons; so Eleazar and Ithamar served as priests. / With the help of Eleazar’s descendant Zadok and Ithamar’s descendant Ahimelech, David divided them according to the offices of their service. …

2 Chronicles 31:2
Hezekiah reestablished the divisions of the priests and Levites—each of them according to their duties as priests or Levites—for the burnt offerings and peace offerings, for ministry, for giving thanks, and for singing praises at the gates of the LORD’s dwelling.

1 Chronicles 23:28-32
but their duty was to assist the descendants of Aaron with the service of the house of the LORD, being responsible for the courts and chambers, the purification of all the holy things, and the work of the service of the house of God, / as well as for the rows of the showbread, the fine flour for the grain offering, the wafers of unleavened bread, the baking, the mixing, and all measurements of quantity and size. / They were also to stand every morning to give thanks and praise to the LORD, and likewise in the evening. …

---

and encouraged them

2 Chronicles 30:22
And Hezekiah encouraged all the Levites who performed skillfully before the LORD. For seven days they ate their assigned portion, sacrificing peace offerings and giving thanks to the LORD, the God of their fathers.

2 Chronicles 29:4-11
Then he brought in the priests and Levites and gathered them in the square on the east side. / “Listen to me, O Levites,” he said. “Consecrate yourselves now and consecrate the house of the LORD, the God of your fathers. Remove from the Holy Place every impurity. / For our fathers were unfaithful and did evil in the sight of the LORD our God. They abandoned Him, turned their faces away from the dwelling place of the LORD, and turned their backs on Him. …

1 Chronicles 28:20
David also said to Solomon his son, “Be strong and courageous, and do it. Do not be afraid or discouraged, for the LORD God, my God, is with you. He will neither fail you nor forsake you before all the work for the service of the house of the LORD is finished.

---

in the service of the house of the LORD.

2 Chronicles 29:35
Furthermore, the burnt offerings were abundant, along with the fat of the peace offerings and the drink offerings for the burnt offerings. So the service of the house of the LORD was established.

2 Chronicles 31:11-19
Then Hezekiah commanded them to prepare storerooms in the house of the LORD, and they did so. / And they faithfully brought in the contributions, tithes, and dedicated gifts. Conaniah the Levite was the officer in charge of them, and his brother Shimei was second. / Jehiel, Azaziah, Nahath, Asahel, Jerimoth, Jozabad, Eliel, Ismachiah, Mahath, and Benaiah were overseers under the authority of Conaniah and his brother Shimei, by appointment of King Hezekiah and of Azariah the chief official of the house of God. …

1 Chronicles 9:13
and 1,760 of their relatives, the heads of their families, able men for the work of the service of the house of God.

---

2 Kings 23:21-23
The king commanded all the people, “Keep the Passover of the LORD your God, as it is written in this Book of the Covenant.” / No such Passover had been observed from the days of the judges who had governed Israel through all the days of the kings of Israel and Judah. / But in the eighteenth year of Josiah’s reign, this Passover was observed to the LORD in Jerusalem.

Exodus 12:1-28
Now the LORD said to Moses and Aaron in the land of Egypt, / “This month is the beginning of months for you; it shall be the first month of your year. / Tell the whole congregation of Israel that on the tenth day of this month each man must select a lamb for his family, one per household. …

Deuteronomy 16:1-8
Observe the month of Abib and celebrate the Passover to the LORD your God, because in the month of Abib the LORD your God brought you out of Egypt by night. / You are to offer to the LORD your God the Passover sacrifice from the herd or flock in the place the LORD will choose as a dwelling for His Name. / You must not eat leavened bread with it; for seven days you are to eat with it unleavened bread, the bread of affliction, because you left the land of Egypt in haste—so that you may remember for the rest of your life the day you left the land of Egypt. …

2 Chronicles 30:1-27
Then Hezekiah sent word throughout all Israel and Judah, and he also wrote letters to Ephraim and Manasseh inviting them to come to the house of the LORD in Jerusalem to keep the Passover of the LORD, the God of Israel. / For the king and his officials and the whole assembly in Jerusalem had decided to keep the Passover in the second month, / since they had been unable to keep it at the regular time, because not enough priests had consecrated themselves and the people had not been gathered in Jerusalem. …

1 Kings 9:25
Three times a year Solomon offered burnt offerings and peace offerings on the altar he had built for the LORD, burning incense with them before the LORD. So he completed the temple.

2 Chronicles 8:12-13
At that time Solomon offered burnt offerings to the LORD on the altar of the LORD he had built in front of the portico. / He observed the daily requirement for offerings according to the commandment of Moses for Sabbaths, New Moons, and the three annual appointed feasts—the Feast of Unleavened Bread, the Feast of Weeks, and the Feast of Tabernacles.

Leviticus 23:4-8
These are the LORD’s appointed feasts, the sacred assemblies you are to proclaim at their appointed times. / The Passover to the LORD begins at twilight on the fourteenth day of the first month. / On the fifteenth day of the same month begins the Feast of Unleavened Bread to the LORD. For seven days you must eat unleavened bread. …