Let her not leave him - A change of phraseology from the last verse, to suit the circumstances. The wife did not have power to "put away" the husband, and expel him from his own home; but she might think it her duty to be separated from him. The apostle counsels her not to do this; and this advice should still be followed. She should still love her husband and seek his welfare; she should be still a kind, affectionate, and faithful wife; and all the more so that she may show him the excellence of religion, and win him to love it. She should even bear much, and bear it long; nor should she leave him unless her life is rendered miserable, or in danger; or unless he wholly neglects to make provision for her, and leaves her to suffering, to want, and to tears. In such a case no precept of religion forbids her to return to her father's house, or to seek a place of safety and of comfort. But even then it is not to be a separation on account of a difference of religious sentiment, but for brutal treatment. Even then the marriage tie is not dissolved, and neither party is at liberty to marry again.

And the woman - Converted from heathenism to the Christian faith; which hath a husband, who still abides in heathenism; if he be pleased to dwell with her, notwithstanding she has become a Christian since their marriage; let her not leave him because he still continues a heathen.

And the woman which hath an husband that believeth,.... The apostle puts the case both ways, there being the same reason for one as for another; that if she that was a sister, who was partaker of the grace of God, and a member of the church, had a husband to whom she was married before her conversion; who was an unbeliever, had no faith in Christ, nor any notion of the Gospel, but an infidel to both:
and if he be pleased to dwell with her; loves her, and is willing to continue with her; neither puts her away from him, nor departs from her on account of her Christianity:
let her not leave him; but continue, and cohabit with him as man and wife; this is the advice the apostle gives, as agreeably to the light of nature and reason; as becoming the Gospel of Christ, and as what might serve to recommend it, and spread the knowledge of it.

the woman--a believer.
let her not leave him--"her husband," instead of "him," is the reading of the oldest manuscripts The Greek for "leave" is the same as in 1-Corinthians 7:12, "put away"; translate, "Let her not put away [that is, part with] her husband." The wife had the power of effecting a divorce by Greek and Roman law.