Numbers 18:28

You are to present an offering to the Lord from every tenth you receive from the Israelites. Give some of it to Aaron the priest as an offering to the Lord.

Genesis 14:18

Then Melchizedek, king of Salem, brought out bread and wine; he was a priest to God Most High.

Hebrews 6:20-10

Jesus has entered there on our behalf as a forerunner, because He has become a high priest forever in the order of Melchizedek.

Treasury of Scripture Knowledge

Summary

Thus ye also shall offer an heave offering unto the LORD of all your tithes, which ye receive of the children of Israel; and ye shall give thereof the LORD'S heave offering to Aaron the priest.

Bible References

And ye shall

Genesis 14:18
Then Melchizedek, king of Salem, brought out bread and wine; he was a priest to God Most High.
Hebrews 6:20
Jesus has entered there on our behalf as a forerunner, because He has become a high priest forever in the order of Melchizedek.
Hebrews 7:1
For this Melchizedek—

King of Salem, priest of the Most High God,
who met Abraham and blessed him
as he returned from defeating the kings,

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.