Ambrosiaster : Paul says this in the case of two Gentiles, one of whom has become a believer. Normally, a pagan detests Christianity, and a Christian does not want to be contaminated by paganism, which is why Paul says that if they are happy to stay together, they should continue to do so. — COMMENTARY ON PAUL'S EPISTLES Severian of Gabala : Paul did not mean that a woman should marry an unbeliever, only that she should stay with him if she is already married. — PAULINE COMMENTARY FROM THE GREEK CHURCH