"God requires...forgiveness in us upon the account of the forgiveness we receive from him; which is to put the greatest obligation upon us unto it that we are capable of, and to give the strongest and most powerful motive possible unto its performance. See Eph. iv. 32."
-John Owen, "An Exposition of Psalm 130". The Works of John Owen, Volume VI. The Banner of Truth Trust: Carlisle, PA. (1668) 2000. p.496.