1 Corinthians 7:12
But to the rest say I, not the Lord (toiv de loipoiv legw egw, oux o Kuriov). Paul has no word about marriage from Jesus beyond the problem of divorce. This is no disclaimer of inspiration. He simply means that here he is not quoting a command of Jesus.
An unbelieving wife (gunaika apiston). This is a new problem, the result of work among the Gentiles, that did not arise in the time of Jesus. The form apiston is the same as the masculine because a compound adjective. Paul has to deal with mixed marriages as missionaries do today in heathen lands. The rest (oi loipoi) for Gentiles (Ephesians 2:3) we have already had in I Thessalonians 4:13; I Thessalonians 5:6 which see. The Christian husband married his wife when he himself was an unbeliever. The word apistov sometimes means unfaithful (Luke 12:46), but not here (cf. John 20:27).
She is content (suneudokei). Late compound verb to be pleased together with, agree together. In the papyri.
Let him not leave her (mh afietw authn). Perhaps here and in verses I Corinthians 7:11, I Corinthians 7:13 afihmi should be translated "put away" like apoluw in Mark 10:1. Some understand afihmi as separation from bed and board, not divorce.
