[Raptor]

This verse is clearly directed to saved believers, who have had all their sins forgiven unconditionally by faith and are saved eternally and have a salvation that can never be lost. Yet here there is another aspect, conditional forgiveness at the judgment after you are saved:

For if you forgive men their trespasses, your heavenly Father will also forgive you. But if you do not forgive men their trespasses, neither will your Father forgive yours. Matthew 7:14.