Numbers 18:21

I have given the Levites one-tenth of every Israelite's income. This is in return for the work they do at the tent of meeting.

Deuteronomy 14:22-29

You shall surely tithe all the produce from what you sow, which comes out of the field every year.

Nehemiah 10:37

That we would take the first of our rough meal, and our lifted offerings, and the fruit of every sort of tree, and wine and oil, to the priests, to the rooms of the house of our God. The tenth of the produce of our land to the Levites for the Levites, take a tenth in all the towns of our ploughed land.

Nehemiah 12:44

Men were stationed over the houses where the contributions and the first fruits and the tenths were stored. They were to take into them the amounts, from the fields of every town. The law fixed this for the priests and the Levites: Judah was glad on account of the priests and the Levites who were in their places.

Genesis 14:20

Blessed be God Most High, who has delivered your enemies into your hand! Abram gave him one tenth of everything.

Leviticus 27:30-33

One-tenth of what comes from the land, whether grain or fruit, is holy and belongs to Jehovah.

Numbers 3:7-8

They will work for him and the whole community in front of the tent of meeting, doing what needs to be done for the inner tent.

Numbers 18:6

I chose the other Levites from among the Israelites to help you. They are a gift given to Jehovah to do the necessary work at the tent of meeting.

Numbers 18:24-26

Instead, I will give the Levites what the Israelites contribute to Jehovah, one-tenth of the Israelites' income. This is why I said about them: They will own no property as the other Israelites do.

Deuteronomy 12:17-19

You may not eat Jehovah's offerings in your cities. Those offerings are: one-tenth of your grain, new wine, and olive oil; the firstborn of your cattle, sheep, or goats; the offerings you vow to bring; your freewill offerings; and your contributions.

2 Chronicles 31:5-6

As soon as the order was given, the people of Israel brought gifts of their finest grain, wine, olive oil, honey, and other farm produce, and they also brought the tithes of everything they had.

2 Chronicles 31:12

and put all the gifts and tithes in them for safekeeping. They placed a Levite named Conaniah in charge and made his brother Shimei his assistant.

Nehemiah 10:29

They were united with their brothers, their rulers, and put themselves under a curse and an oath, to keep their steps in the way of God's law, which was given by Moses, the servant of God, and to keep and do all the orders of the Jehovah, our Lord, and his decisions and his rules.

Nehemiah 13:12

All Judah came with the tenth part of the grain and wine and oil and put it into the storehouses.

1 Corinthians 9:13-14

Do you not know that they who minister about holy things live off the things of the temple? And they who wait at the altar are partakers with the altar?

Galatians 6:6

But let him that is orally taught in the word share all good things.

Hebrews 7:5

The descendants of Levi who receive the priestly office have a commandment in the Law to take tithes from the people. This is from their brothers, for these are descended from Abraham.

Treasury of Scripture Knowledge

Summary

And, behold, I have given the children of Levi all the tenth in Israel for an inheritance, for their service which they serve, even the service of the tabernacle of the congregation.

Bible References

The tenth

Numbers 18:24
Instead, I will give the Levites what the Israelites contribute to Jehovah, one-tenth of the Israelites' income. This is why I said about them: They will own no property as the other Israelites do.
Leviticus 27:30
One-tenth of what comes from the land, whether grain or fruit, is holy and belongs to Jehovah.
Deuteronomy 12:17
You may not eat Jehovah's offerings in your cities. Those offerings are: one-tenth of your grain, new wine, and olive oil; the firstborn of your cattle, sheep, or goats; the offerings you vow to bring; your freewill offerings; and your contributions.
Deuteronomy 14:22
You shall surely tithe all the produce from what you sow, which comes out of the field every year.
2 Chronicles 31:5
As soon as the order was given, the people of Israel brought gifts of their finest grain, wine, olive oil, honey, and other farm produce, and they also brought the tithes of everything they had.
Nehemiah 10:29
They were united with their brothers, their rulers, and put themselves under a curse and an oath, to keep their steps in the way of God's law, which was given by Moses, the servant of God, and to keep and do all the orders of the Jehovah, our Lord, and his decisions and his rules.
Nehemiah 12:44
Men were stationed over the houses where the contributions and the first fruits and the tenths were stored. They were to take into them the amounts, from the fields of every town. The law fixed this for the priests and the Levites: Judah was glad on account of the priests and the Levites who were in their places.
Nehemiah 13:12
All Judah came with the tenth part of the grain and wine and oil and put it into the storehouses.

Even the service

Numbers 18:6
I chose the other Levites from among the Israelites to help you. They are a gift given to Jehovah to do the necessary work at the tent of meeting.
Numbers 3:7
They will work for him and the whole community in front of the tent of meeting, doing what needs to be done for the inner tent.
1 Corinthians 9:13
Do you not know that they who minister about holy things live off the things of the temple? And they who wait at the altar are partakers with the altar?
Galatians 6:6
But let him that is orally taught in the word share all good things.

General references

Leviticus 27:30
One-tenth of what comes from the land, whether grain or fruit, is holy and belongs to Jehovah.
Deuteronomy 10:9
Levi does not have a portion or inheritance with his brothers. Jehovah is his inheritance; just as Jehovah your God spoke to him.
Deuteronomy 14:22
You shall surely tithe all the produce from what you sow, which comes out of the field every year.