Prison house of sin
2 Peter 2:19
(19) While they promise them liberty, they themselves are the servants of corruption: for of whom a man is overcome, of the same is he brought in bondage.
Romans 7:14
(14) For we know that the law is spiritual: but I am carnal, sold under sin.
Jesus freed people
John 8:32-36
(32) And ye shall know the truth, and the truth shall make you free.
(33) They answered him, We be Abraham's seed, and were never in bondage to any man: how sayest thou, Ye shall be made free?
(34) Jesus answered them, Verily, verily, I say unto you, Whosoever committeth sin is the servant of sin.
(35) And the servant abideth not in the house for ever: but the Son abideth ever.
(36) If the Son therefore shall make you free, ye shall be free indeed.
Jesus through Noah preached before the flood to those in the prison house of sin
2 Peter 2:5
(5) And spared not the old world, but saved Noah the eighth person, a preacher of righteousness, bringing in the flood upon the world of the ungodly;
Hebrews 11:7
(7) By faith Noah, being warned of God of things not seen as yet, moved with fear, prepared an ark to the saving of his house; by the which he condemned the world, and became heir of the righteousness which is by faith.
Genesis 6:3
(3) And the LORD said, My spirit shall not always strive with man, for that he also is flesh: yet his days shall be an hundred and twenty years.
'Spirits in prison' are not disembodied spirits
Hebrews 12:9
(9) Furthermore we have had fathers of our flesh which corrected us, and we gave them reverence: shall we not much rather be in subjection unto the Father of spirits, and live?
Hebrews 12:23
(23) To the general assembly and church of the firstborn, which are written in heaven, and to God the Judge of all, and to the spirits of just men made perfect,
Numbers 16:22
(22) And they fell upon their faces, and said, O God, the God of the spirits of all flesh, shall one man sin, and wilt thou be wroth with all the congregation?
Numbers 27:16
(16) Let the LORD, the God of the spirits of all flesh, set a man over the congregation,
These texts are a reference to people alive on this earth