Hebrews 7:4-6

4So think about how great this man, Melchizedek, was! Even Abraham, the ancestor of all Israel's people, gave gifts to Melchizedek. Abraham gave him a tenth part of everything that he had won in the fight.

5Men from Levi's family group who become priests receive gifts from their own people. God's Law says that the people must give the Levite priests a tenth part of what they have. But the priests and the other people are all Israelites. They all come from Abraham's family.

6As for Melchizedek, he did not come from Levi's family. But he still received a tenth part of what Abraham had. He also asked God to bless Abraham. But Abraham was the one who had already received God's promises.