Hebrews 5:1-6

King James Version

5 For every high priest taken from among men is ordained for men in things pertaining to God, that he may offer both gifts and sacrifices for sins:

² Who can have compassion on the ignorant, and on them that are out of the way; for that he himself also is compassed with infirmity.

³ And by reason hereof he ought, as for the people, so also for himself, to offer for sins.

⁴ And no man taketh this honour unto himself, but he that is called of God, as was Aaron.

⁵ So also Christ glorified not himself to be made an high priest; but he that said unto him, Thou art my Son, to day have I begotten thee.

⁶ As he saith also in another place, Thou art a priest for ever after the order of Melchisedec.