There has been many posts on this forum outlining why OSAS is a wrong doctrine.
OSAS is truth. Jesus Christ died for past, present and future sins. Do you not believe? God bless.
Rom 8:33-39 Who will bring any charge against those whom God has chosen? It is God who justifies. 34Who then is the one who condemns? No one. Christ Jesus who died—more than that, who was raised to life—is at the right hand of God and is also interceding for us. 35Who shall separate us from the love of Christ? Shall trouble or hardship or persecution or famine or nakedness or danger or sword? 36As it is written:
“For your sake we face death all day long;
we are considered as sheep to be slaughtered.”
37No, in all these things we are more than conquerors through him who loved us. 38For I am convinced that neither death nor life, neither angels nor demons,
neither the present nor the future, nor any powers, 39neither height nor depth, nor anything else in all creation, will be able to separate us from the love of God that is in Christ Jesus our Lord.