Cross reference
Numbers 18:28
28 Thus you also shall offer a heave-offering to Yahweh of all your tithes, which you receive of the children of Israel; and of it you shall give Yahweh's heave-offering to Aaron the priest.
Genesis 14:18
18 Melchizedek king of Salem brought forth bread and wine: and he was priest of God Most High.
Hebrews 6:20-10
20 where as a forerunner Jesus entered for us, having become a high priest forever after the order of Melchizedek.
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,
2 to whom also Abraham divided a tenth part of all (being first, by interpretation, king of righteousness, and then also king of Salem, which is king of peace;
3 without father, without mother, without genealogy, having neither beginning of days nor end of life, but made like the Son of God), remains a priest continually.
4 Now consider how great this man was, to whom even Abraham, the patriarch, gave a tenth out of the best spoils.
5 They indeed of the sons of Levi who receive the priest's office have a commandment to take tithes of the people according to the law, that is, of their brothers, though these have come out of the loins of Abraham,
6 but he whose genealogy is not counted from them has taken tithes of Abraham, and has blessed him who has the promises.
7 But without any dispute the less is blessed by the better.
8 Here people who die receive tithes, but there one receives tithes of whom it is testified that he lives.
9 So to say, through Abraham even Levi, who receives tithes, has paid tithes,
10 for he was yet in the loins of his father when Melchizedek met him.