Patristic A.D. 444
“Great then is the praise of mercy. For this virtue makes us like unto God, and imprints upon our souls certain signs as it were of a heavenly nature. Hence it follows, Be ye then merciful, as your heavenly Father also is merciful.”
Catena Aurea: Gospel of Luke, as excerpted in the Catena Aurea on Luke 6:32-36
PD · J. H. Newman (Oxford, 1843) ↗