2 Chronicles 13:10

As for us, Jehovah is our God, and we have not forsaken Him, and priests are ministering to Jehovah, sons of Aaron and the Levites, in the work,

Exodus 19:5-6

And now, if ye really hearken to My voice, then ye have kept My covenant, and been to Me a peculiar treasure more than all the peoples, for all the earth is Mine;

Exodus 29:1-37

And this is the thing which thou dost to them, to hallow them, for being priests to Me: Take one bullock, a son of the herd, and two rams, perfect ones,

Numbers 16:40

a memorial to the sons of Israel, so that a stranger who is not of the seed of Aaron doth not draw near to make a perfume before Jehovah, and is not as Korah, and as his company, -- as Jehovah hath spoken by the hand of Moses to him.

Numbers 18:1-7

And Jehovah saith unto Aaron, 'Thou, and thy sons, and the house of thy father with thee, do bear the iniquity of the sanctuary; and thou, and thy sons with thee, do bear the iniquity of your priesthood;

2 Chronicles 11:16-17

and after them, out of all the tribes of Israel, those giving their heart to seek Jehovah, God of Israel, have come in to Jerusalem to sacrifice to Jehovah, God of their father.

Zechariah 13:9

And I have brought the third into fire, And refined them like a refining of silver, And have tried them like a trying of gold, It doth call in My name, and I answer it, I have said, 'My people it is,' And it saith, '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
and after them, out of all the tribes of Israel, those giving their heart to seek Jehovah, God of Israel, have come in to Jerusalem to sacrifice to Jehovah, God of their father.
Exodus 19:5
And now, if ye really hearken to My voice, then ye have kept My covenant, and been to Me a peculiar treasure more than all the peoples, for all the earth is Mine;
Zechariah 13:9
And I have brought the third into fire, And refined them like a refining of silver, And have tried them like a trying of gold, It doth call in My name, and I answer it, I have said, 'My people it is,' And it saith, 'Jehovah is my God!'

The priests

Exodus 29:1
And this is the thing which thou dost to them, to hallow them, for being priests to Me: Take one bullock, a son of the herd, and two rams, perfect ones,
Numbers 16:40
a memorial to the sons of Israel, so that a stranger who is not of the seed of Aaron doth not draw near to make a perfume before Jehovah, and is not as Korah, and as his company, -- as Jehovah hath spoken by the hand of Moses to him.
Numbers 18:1
And Jehovah saith unto Aaron, 'Thou, and thy sons, and the house of thy father with thee, do bear the iniquity of the sanctuary; and thou, and thy sons with thee, do bear the iniquity of your priesthood;