Forgiveness .....

In Jesus' transitional prayer "the Lord's prayer",
He is actually highlighting understandings and abilities we lack under the Law.
Jesus actually brings out the consequences of non-performance :

"... if you don't forgive others, then your Father won't forgive you... " M6:15

These words might set your mind in an honourable direction but
you can't achieve it apart from surrendering to His Enabling Grace in you.

Jesus is speaking these things before His Sacrifice, that is, pre-Cross.
Holy Spirit speaks so differently after the "ONCE for ALL" sacrifice of Jesus, i.e. post-Cross.

" ..... as Christ FORGAVE you, so forgive others ..... " E4:32;C3:13

Forgiveness is not attained
by a confession system,
by a learning system,
or a sacrifice system;

FORGIVEN IS (totally and permanently) YOUR REALITY.

Pre-Cross : my forgiveness was "EARNT" by forgiving others ......
Post-Cross : my forgiveness has been GIFTED to me .....
from and in this Grace I am enabled to forgive myself and others.

[affirmations from Andrew Farley in "God Not Religion".]