"He was "made an High Priest forever, after the order of Melchisedec." Taxis, rendered order, properly signifies "series, succession."
---Christ, like Melchisedec, had no priestly descent of pedigree;
Hebrews 7:3 (margin) i.e. He never followed nor will have a successor in office; and "because He continueth ever, hath an unchangeable Priesthood," (which passeth not from one to another; margin) verse 24."
O.L. Crozier