Hebrews 7:3 - Wesley's Explanatory Notes

Without father, without mother, without pedigree — Recorded, without any account of his descent from any ancestors of the priestly order. Having neither beginning of days, nor end of life — Mentioned by Moses. But being — In all these respects. Made like the Son of God — Who is really without father, as to his human nature; without mother, as to his divine; and in this also, without pedigree — Neither descended from any ancestors of the priestly order. Remaineth a priest continually — Nothing is recorded of the death or successor of Melchisedec. But Christ alone does really remain without death, and without successor.