I think you have a disagreement with God here and you need to take it up with Him.But you are not talking about forgiveness. You are talking about not forgiving sins, transferring and punishing sin, in order to allow the guilty escape the wrath to come.
I previously posted Numbers 15:27-28 for your attention. Here you are again. 'And if a person sins unintentionally , then he shall bring a female goat in its first year as a sin offering. So the priest shall make atonement for the person who sins unintentionally, when he sins unintentionally before the LORD, to make atonement for him; and it shall be FORGIVEN him.' I don't really see how that could be any clearer. Much the same is also found in Leviticus 4:26, 31, 35; 5:10, 16, 18. God forgives sins, but only on the basis of the shedding of blood (Hebrews 9:22, 27-28).