Forgiveness assures us of immunity from everlasting punishment.
Justification, which goes further, assures us of an indefeasible title to be in God's holy presence. —C.E. Stuart

Forgiveness is the removal of the penalty of our sins.
Justification is the removal of the very charge of guilt that once lay at our door. —H.P. Barker

Only God can both forgive and justify a man at the same time. This He does for the believing sinner on the basis of the cross. —H.A. Ironside