Ambrose of Milan — as excerpted in the Catena Aurea on Luke 5:27-32

“But how does God love righteousness, and David has never seen the righteous man forsaken, if the righteous are excluded, the sinner called; unless you understand that He meant by the righteous those who boast of the law, (Ps. 11:7, Ps. 37:25.) and seek not the grace of the Gospel. Now no one is justified by the law, but redeemed by grace. He therefore calls not those who call themselves righteous, for the claimers to righteousness are not called to grace. For if grace is from repentance, surely he who despises repentance renounces grace.”