On the cross for a rime before Christ's physical dearh. The atonement was completed before He went to Paradise.
and having cried with a loud voice, Jesus said, 'Father,
to Thy hands I commit my spirit;' and these things having said, he breathed forth
the spirit. Luke 23:46
The night before that above was said, Jesus was in the garden praying and the following is said about that; Who in the days of his flesh, having offered up both supplications and entreaties
to him who was able to save him out of death, with strong crying and tears; (and having been heard because of his piety

Heb 5:7 DBY
What would think that says? To
thy hands I commit. I shall be placing
the spirit of me. Just what do you believe, the spirit of him, did for the flesh and made him soul with life? See Lev 17:11 for
the soul of the flesh is in the blood; and I have given it to you upon the altar to make atonement for your souls, for it is the blood that maketh atonement for the soul.--- What is in the blood? Is it the spirit of the breath of lives from God?
For
it is not possible that the blood of bulls and of goats should take away sins. Heb 10:4 -- The blood that contains, the breath of the spirit of lives.
I do not believe the atonement for the soul could take place until whatever it is that is in the blood that makes the flesh soul living, departs.I do believe that is the spirit from God.
What is finished is the mission for which the Son was sent, obedience unto death> Heb 5:7.8 Phil 2:8
egkatelipes egkatelipes G1459 vi
2Aor Act 2 Sg YOU-abandonED you-did-forsake
I know, no Greek. So I ask; Is that past tense, present tense or past and on going?
Atonement required death and salvation required life out of death.
IMHO Jesus the only begotten Son died for our sins and was dead, the spirit of him being in the hands of the Father, for three days.
or I delivered to you first, what also I did receive, that Christ died for our sins, according to the Writings, and that he was buried, and that he hath risen on the third day, according to the Writings, 1 Cor 15:3,4
Paul, an apostle -- not from men, nor through man, but through Jesus Christ, and God the Father, who did raise him
out of the dead -- Gal 1:1
and if the Spirit of Him who did raise up Jesus
out of the dead doth dwell in you, He who did raise up the Christ out of the dead shall quicken also your dying bodies, through His Spirit dwelling in you. Rom 8:11