Ibrani 7:3

7:3 Without father, without mother, without genealogy, he has neither beginning of days nor end of life but is like the son of God, and he remains a priest for all time.

Ibrani 7:16

7:16 who has become a priest not by a legal regulation about physical descent ¹  but by the power of an indestructible life.

Ibrani 7:24-28

7:24 but he holds his priesthood permanently since he lives forever. 7:25 So he is able to save completely those who come to God through him, because he always lives to intercede for them. 7:26 For it is indeed fitting for us to have such a high priest: holy, innocent, undefiled, separate from sinners, and exalted above the heavens. 7:27 He has no need to do every day what those priests do, to offer sacrifices first for their own sins and then for the sins of the people, since he did this in offering himself once for all. 7:28 For the law appoints as high priests men subject to weakness, ²  but the word of solemn affirmation that came after the law appoints a son made perfect forever.

[7:16]  ¹ tn Grk “a law of a fleshly command.”

[7:28]  ² sn See Heb 5:2 where this concept was introduced.