I hold to this interpretation here copied from Matthew Henry's Commentary
I hold to what the scriptures teach within themselves:
Job 3:11,13,17-19
[11] Why died I not from the womb? why did I not give up the ghost when I came out of the belly? [13] For now should I have lain still and been quiet, I should have slept: then had I been at rest, [17] There the wicked cease from troubling; and there the weary be at rest. [18]
There the prisoners rest together; they hear not the voice of the oppressor. [19] The small and great are there; and the servant is free from his master.
All who died in the Old Testament were in the place Job described inspired by the Spirit of God.
Messiahs purpose, as prophesied here:
Isaiah 42:6-7
[6] I the Lord have called thee in righteousness, and will hold thine hand, and will keep thee, and give thee for a covenant of the people, for a light of the Gentiles; [7] To open the blind eyes, to
bring out the prisoners from the prison, and them that sit in darkness out of the prison house.
Zechariah 9:11
As for thee also,
by the blood of thy covenant I have sent forth thy prisoners out of the pit wherein is no water.
Was to bring out these prisoners (all the dead in Old Testament who will believe the gospel when Messiah preached to them).
And here the scriptures specifically detail that this happened before Christ went up to heaven:
1 Peter 3:18-20
[18] For Christ... [19] ...preached unto the spirits in prison; [20] Which sometime were disobedient, when once the longsuffering of God waited in the days of Noah, while the ark was a preparing, wherein few, that is, eight souls were saved by water.
And to be clear, I do not believe that Christ is
still preaching to the dead today, nor do I believe in purgatory, nor am I a Catholic.
All the living after his resurrection must hear the gospel before the end comes:
Matthew 24:14
[14] And this gospel of the kingdom shall be preached in
all the world for a witness unto
all nations; and then shall the end come.