Hebrews 7:5-7

7:5 And those of the sons of Levi who receive the priestly office have authorization according to the law to collect a tithe from the people, that is, from their fellow countrymen, although they too are descendants of Abraham. 7:6 But Melchizedek who does not share their ancestry collected a tithe from Abraham and blessed the one who possessed the promise. 7:7 Now without dispute the inferior is blessed by the superior,