your first and most greivious error is the unbiblical concept known as payment for sin..Of a truth I tell you there is no payment for sin, for the wages of sin is death..The payment for sin myth was invented by the Catholic theologian Thomas Aquinas, and then built upon by Luther, and Calvin some 300 years later....simple logic presupposes that if a debt is paid for, it cannot later be forgiven, nor can mercy be applied. Example: If someone pays off your credit card the bank cannot forgive your debt because there is no debt left to forgive. You will find this truth in the parable of the unforgiving servant....nobody paid for his sin debt it was all forgiven by the king, but he in turn could not forgive his own debtors, so the king revoked His forgiveness and cast that evil man into prison. sidenote: it doesn't sound like OSAS to me......Anyway what in fact happened, is that Jesus atoning works justified God's mercy, (it did not satisfy God's wrath). So, God the Father could now dispense the mercy that HE always desired to give through the covenant of reconciliation, whereby Jesus purchased our souls at Calvary with His blood.
Covenant theology has all but been forgotten in the annuls of human history over the last 500 years. This new covenant is what Hebrews 9 is all about. However, the payment for sin Penal Substitution myth has blinded the minds of 100s of millions looking for a flesh pleasing gospel that allows for the covenant to be broken, yet still enter into the kingdom. Turning the grace of God into lasciviousness but its still pie in the sky when you die in the sweet bye and bye...
Jesus finished the needful works of reconciliation through the conditions of God's new covenant, Heb. 9. Whereby man through repentance could now come to the mercy seat of God (Christ our propitiation), and be reconciled back to God's favour through the baptisms of repentance for the remission of past sins...Its not about accepting Jesus, but rather the commandment to repent and believe/obey the gospel from heart purity. In actuality its God who accepts use after we have come clean with Him by preparing our heart in repentance, and then gives the answer of the tongue if the guile has been removed, (the seed that falls on good soil).....The preparation of the heart belongs to man, and the answer of thee tongue is of God, Proverbs 16-1. ..................dig deep and be blessed in God's truth, not the old wine and tiresome traditions of men...