Numbers 18:26

"Speak unto the Levites and say unto them, 'When ye take of the children of Israel the tithes which I have given you of them to your inheritance, ye shall take a heave offering of that same for the LORD: even the tenth of that tithe.

Nehemiah 10:38

And the priest, the son of Aaron, shall with the Levites have also of the tithes of the Levites, so that the Levites shall bring up the tithes of their tithes unto the house of our God to the chest in the treasure house.

Numbers 18:21

And behold, I have given the children of Levi the tenth in Israel to inherit, for the service which they serve in the tabernacle of witness,

Treasury of Scripture Knowledge

Summary

Thus speak unto the Levites, and say unto them, When ye take of the children of Israel the tithes which I have given you from them for your inheritance, then ye shall offer up an heave offering of it for the LORD, even a tenth part of the tithe.

Then ye shall

A tenth part

General references

Bible References

Then ye shall

Numbers 18:19
All the holy heave offerings which the children of Israel heave unto the LORD, I give thee, and thy sons and thy daughters with thee, to be a duty forever. And it shall be a salted covenant forever, before the LORD: unto thee and to thy seed with thee."

A tenth part

Nehemiah 10:38
And the priest, the son of Aaron, shall with the Levites have also of the tithes of the Levites, so that the Levites shall bring up the tithes of their tithes unto the house of our God to the chest in the treasure house.

General references

Numbers 15:21
Of the first of your dough ye must give unto the LORD a heave offering, throughout your generations.