Now those of the sons of Levi who are appointed to the priesthood, are authorized by the Law to take tithes of the people, that is, of their brothers, and that too, although these are descended from Abraham.

For the law of Moses appoints [morally] weak men to be head priests, but the message of [God's] oath, which came after that law [Note: The quotation from Psa. 110:4 (See verse 21) was written after the law of Moses was given] appointed the Son, who was made perfect [in every way] forever.

Now if you are without any discipline, in which all true sons share, you are only illegitimate children and not true sons.