Future sin has been addressed at the Cross, but as it is future, we do not have to sin. It is absurd to forgive future sin.
Are you forgiven for your future sins now? All your future sins, no matter what? Is this what OSAS means?
but as it is future, we do not have to sin.
You don't have to, but you will, yes? And then ? What are you presuming in regards to your future sin?
It is absurd to forgive future sin.
It is absurd to presume your future sins are forgiven now, not knowing what they are or whether you will confess or repent of them. Is this what you are doing in OSAS?
In God's economy, there is no future sin. He is outside time.
OTOH, when Jesus died for our sins, all OUR sins were future sins.