We have a tendency to excuse sin because God is willing to forgive it. Don’t ever excuse sin. Be willing to forgive those that commit sin but don’t ever start condoning it in any way.
In Romans it says, “What shall we say then? Shall we continue in sin, that grace may abound? God forbid. We who died to sin, how shall we any longer live therein?” Romans 6:1-2 (ASV).
Christians should be maturing in their faith. It doesn’t mean we won’t sin but holiness should be what we’re aiming for.