1 Cor 7:3-5
"The husband should give to his wife her conjugal rights, and likewise the wife to her husband. For the wife does not have authority over her own body, but the husband does. Likewise the husband does not have authority over his own body, but the wife does."
Paul’s conjugal mutuality is revolutionary for the ancient world: both husband and wife have equal duties and rights in marriage. Each spouse’s body belongs to the other—not as property, but as mutual surrender.
1 Cor 7:10-11
"To the married I give this charge (not I, but the Lord): the wife should not separate from her husband... and the husband should not divorce his wife."
Paul distinguishes between the Lord’s teaching (7:10-11) and his own inspired opinion (7:12). The prohibition of divorce comes from Jesus (Matt 5:32; 19:9). The ‘but if she does separate’ indicates Paul recognizes that separations happen—but reconciliation is always the goal.