Numbers 18:28

Thus ye also shall offer a heave-offering unto Jehovah of all your tithes, which ye receive of the children of Israel; and thereof ye shall give Jehovah's heave-offering to Aaron the priest.

Genesis 14:18

And Melchizedek king of Salem brought forth bread and wine: and he was priest of God Most High.

Hebrews 6:20-10

whither as a forerunner Jesus entered for us, having become a high priest for ever after 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
And Melchizedek king of Salem brought forth bread and wine: and he was priest of God Most High.
Hebrews 6:20
whither as a forerunner Jesus entered for us, having become a high priest for ever after the order of Melchizedek.
Hebrews 7:1
For this Melchizedek, king of Salem, priest of God Most High, who met Abraham returning from the slaughter of the kings and blessed him,

American Standard Version Public Domain