And this is his commandment, That we should believe on the name of his Son Jesus Christ, and love one another, as he gave us commandment.
All Commentaries on 1 John 3:23 Go To 1 John 3
Augustine of Hippo
AD 430
You see that this is the commandment: ye see that whoso does anything against this commandment, does the sin from which every one that is born of God is free