2 Chronicles 13:10

We still serve Jehovah our God! We have not abandoned him. Priests descended from Aaron perform their duties, and Levites assist them.

Exodus 19:5-6

If you will obey me and are faithful to the terms of my covenant, then out of all the nations you will be my own special possession, for all the earth is mine.

Exodus 29:1-37

Jehovah also said: This is what you must do in order to (consecrate) set Aaron and his sons apart to serve me as priests: Take a young bull that has no defects and two rams that have no defects.

Numbers 16:40

He followed Jehovah's command given through Moses. The copper-covered altar will remind Israel that no one but a descendant of Aaron may come near to burn incense to Jehovah. Everyone else will die like Korah and his followers.

Numbers 18:1-7

Jehovah said to Aaron: You, your sons, and your family will be responsible for any sins against the holy place. You and your sons will also be responsible for any sins you commit when you work as priests.

2 Chronicles 11:16-17

People from every tribe of Israel who were determined to seek Jehovah the true God of Israel followed the Levitical priests to Jerusalem to sacrifice to Jehovah God of their ancestors.

Zechariah 13:9

I will bring the third part into the fire. I will refine them, as silver is refined, and I will test them as gold is tested. They will call on my name, and I will hear them. I will say: 'It is my people!' They will say: 'Jehovah is my God!'

Treasury of Scripture Knowledge

Summary

But as for us, the LORD is our God, and we have not forsaken him; and the priests, which minister unto the LORD, are the sons of Aaron, and the Levites wait upon their business:

Bible References

The lord

2 Chronicles 11:16
People from every tribe of Israel who were determined to seek Jehovah the true God of Israel followed the Levitical priests to Jerusalem to sacrifice to Jehovah God of their ancestors.
Exodus 19:5
If you will obey me and are faithful to the terms of my covenant, then out of all the nations you will be my own special possession, for all the earth is mine.
Zechariah 13:9
I will bring the third part into the fire. I will refine them, as silver is refined, and I will test them as gold is tested. They will call on my name, and I will hear them. I will say: 'It is my people!' They will say: 'Jehovah is my God!'

The priests

Exodus 29:1
Jehovah also said: This is what you must do in order to (consecrate) set Aaron and his sons apart to serve me as priests: Take a young bull that has no defects and two rams that have no defects.
Numbers 16:40
He followed Jehovah's command given through Moses. The copper-covered altar will remind Israel that no one but a descendant of Aaron may come near to burn incense to Jehovah. Everyone else will die like Korah and his followers.
Numbers 18:1
Jehovah said to Aaron: You, your sons, and your family will be responsible for any sins against the holy place. You and your sons will also be responsible for any sins you commit when you work as priests.