"Thus it is written, and thus it was necessary
for the Christ to suffer
and to rise from the dead the third day,
and that repentance
and remission of sinsshould be preached in His name to all nations,
beginning at Jerusalem."
Without His suffering, all our repentance could never bring about remission of sins, because without the shedding of blood, there is no remission of sins.
But because of His suffering, remission of sins is free to the repentant.