Yes, and forgiveness comes only through the shed blood. Would you say therefore the OT saints were not forgiven because Jesus had not yet shed His Blood? I believe the work of Jesus transcends time whether it is in cleansing of sin or rebirthing.Totally understand, one more look at it. We know a birthing comes by a seed, look at the seed of God, which is Christ according to scripture.
(I don't mean to be a stickler but want to look at both sides).