Without father, without mother, without descent. — The last words, “without descent” (or rather, without genealogy), throw light on the meaning of those which precede. Not because we find no mention of the parents of Melchizedek is he thus spoken of as fatherless and motherless, but because he is suddenly introduced as priest, without any token whatever that he held the office by right of genealogy, the only claim familiar to Hebrew readers. It is not necessary to adduce proof of the care with which inquiry was made into the parentage of the Jewish priests (Nehemiah 7:64): in their marriages they were subject to strict restraints (Leviticus 21:13-14); their statement of pedigree (in which was given the name not of father only, but also of every mother) must be complete, ascending to Aaron, and containing no doubtful link. He who is a priest “like Melchizedek” holds a priesthood that rests on no such rights or claims. The words that follow are of similar character. No commencement and no close of priestly position or function are recorded in the sacred history. As the Scripture is silent as to his reception of the office, so also as to any transmission of it to another. In these respects “made like (as a divinely ordained type) unto the Son of God,” he bears perpetually the character of priest.
There have from the first been many who have been dissatisfied with such an explanation of these remarkable words, and have understood them to ascribe to Melchizedek a mysterious and superhuman existence and character. It has been maintained that he was the Son of God Himself, or the Holy Spirit, — an angel or a Power of God. The last tenet was the distinguishing mark of a sect bearing the name of Melchizedekians in the third century. The feeling that the most startling of the expressions here used must surely be intended to point to more than the silence of Scripture on certain points, is not at all unnatural; but perhaps it is not too much to say that every such difficulty is removed by the consideration that here the writer is simply analysing the thought of the inspired Psalmist. Such an oracle as that of Psalms 110:4 must yield up to him its full significance. The divine words are not to be measured by the meaning which man may at first assign to them. The true import of the prophecy which declared that the future priesthood would bear the likeness of Melchizedek’s can only be known when all the characteristics of that priesthood have been traced. The narrative of Genesis was the basis of the prophecy; all that the history presented was taken up in the Psalm.