Numbers 18:26

Unto the Levites, therefore shalt thou speak and shalt say unto them, When ye shall take of the sons of Israel the tenth which I have given unto you from them as your inheritance, then shall ye offer up therefrom the heave-offering of Yahweh, a tenth of the tenth.

Nehemiah 10:38

And the priest the son of Aaron should be with the Levites, when the Levites should take the tithes, - and the Levites, should bring up the tithe of the tithe, unto the house of our God, into the chambers pertaining unto the treasure-house.

Numbers 18:21

And unto the sons of Levi, lo! I have given all the tenth in Israel for an inheritance, - the allotted portion for their laborious work which, they are performing, the laborious work of the tent of meeting:

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 heave-offerings of the holy things which the sons of Israel shall heave up unto Yahweh, have I given unto thee and unto thy sons and unto thy daughters with thee by a statute age-abiding, - an age-abiding covenant of salt, it is before Yahweh, for thee and for thy seed with thee.

A tenth part

Nehemiah 10:38
And the priest the son of Aaron should be with the Levites, when the Levites should take the tithes, - and the Levites, should bring up the tithe of the tithe, unto the house of our God, into the chambers pertaining unto the treasure-house.

General references

Numbers 15:21
Of the first of your meal, shall ye give unto Yahweh a heave-offering, - unto your generations.