Yes, Christ descended into hell. But He has an unchangeable Priesthood by virtue of the power of His endless life.
Hebrews 7:16
And that is why he is able to save us to the uttermost.
John 7:39 and this he said of the Spirit, which those believing in him were about to receive; for not yet was the Holy Spirit, because Jesus was not yet glorified.
John 17:5 'And now, glorify me, Thou Father, with Thyself, with the glory that I had before the world was, with Thee;
Hebrews 7:17 For he testifieth, Thou
art a priest for ever after the order of Melchisedec.
Hebrews 7:16 Who is made, not after the law of a carnal commandment, but after the power of an endless life.
Hebrews 5:5,6 so also the Christ did not glorify himself to become chief priest, but He who spake unto him: 'My Son thou art, I to-day have begotten thee;' as also in another
place He saith, 'Thou
art a priest -- to the age, according to the order of Melchisedek;'
1 Peter 1:21 who through him do believe in God, who did raise out of the dead, and glory to him did give, so that your faith and hope may be in God.
Romans 6:9 knowing that Christ, having been raised up out of the dead, doth no more die, death over him hath no more lordship;
Phil 3:21 who shall transform the body of our humiliation to its becoming conformed to the body of his glory, according to the working of his power, even to subject to himself the all things.
What is the order of our priesthood?
Acts 13:34,35 And as concerning that he raised him up from the dead,
now no more to return to corruption, he said on this wise,
I will give you the sure mercies of David. Wherefore he saith also in another
psalm, Thou shalt not suffer thine Holy One to see corruption.
Who is I and who is you. Is this God the Father speaking to the Son of God? Is that Son the child who was conceived (Matt 1:20 γεννηθὲν ) in the virgin Mary out of Spirit?