Hebrews 7:3

1 For this Melchizedek, the king of Salem, a priest of the Most High God, who gave Abraham his blessing, meeting him when he came back after putting the kings to death,

2 And to whom Abraham gave a tenth part of everything which he had, being first named King of righteousness, and then in addition, King of Salem, that is to say, King of peace;

3 Being without father or mother, or family, having no birth or end to his life, being made like the Son of God, is a priest for ever.

4 Now see how great this man was, to whom our father Abraham gave a tenth part of what he had got in the fight.

5 And it is true that by the law, those of the sons of Levi who have the position of priests may take a tenth part of the people's goods; that is to say, they take it from their brothers though these are the sons of Abraham.

6 But this man, who was not of their family, took the tenth from Abraham, and gave a blessing to him to whom God had given his undertaking.

7 But there is no doubt that the less gets his blessing from the greater.