But to the rest speak I, not the Lord: If any brother has a wife that believes not, and she be pleased to dwell with him, let him not put her away.
All Commentaries on 1 Corinthians 7:12 Go To 1 Corinthians 7
Irenaeus of Lyons
AD 202
But why say I these things concerning the Old Testament? For in the New also are the apostles found doing this very thing, on the ground which has been mentioned, Paul plainly declaring, But these things I say, not the Lord."