Jesus forgave the Jews and the Romans from the cross.
The greek word for "forgive""
aphiemi {af-ee'-ay-mee}
1) to send away a) to bid going away or depart 1) of a husband divorcing his wife b) to send forth, yield up, to expire c) to let go, let alone, let be 1) to disregard 2) to leave, not to discuss now, (a topic) a) of teachers, writers and speakers 3) to omit, neglect d) to let go, give up a debt, forgive, to remit e) to give up, keep no longer 2) to permit, allow, not to hinder, to give up a thing to a person 3) to leave, go way from one a) in order to go to another place b) to depart from any one c) to depart from one and leave him to himself so that all mutual claims are abandoned d) to desert wrongfully e) to go away leaving something behind f) to leave one by not taking him as a companion g) to leave on dying, leave behind one h) to leave so that what is left may remain, leave remaining i) abandon, leave destitute
I heard it preached on a "good friday" that what Jesus was doing was asking God to permit them/ allow to murder him. He was yielding to the cross no longer asking that this cup be removed from Him.
I thought that was an interesting read of that verse.
Since he was already nailed to the cross, I would think that would be kind of redundant.
Among about 50 others it is the same word that is used in the following verse:
1Jo 1:9 If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.
So if we are going to allow that the sin was not actually forgiven from the cross, then we cannot state with any certainty that our sin will be forgiven if we place our faith in Christ and follow his commands.
Christ's call for forgiveness for those who put him on the cross was unconditional. Is the forgiveness that you received in Christ any more conditional? It's the same word.
Christ forgave sins unconditionally before the cross? Will those people for whom he forgave their sins be accountable for them at the judgment? I don't think so. Do you? Really?