2 Samuel 3:14

Ish-bosheth s consent was necessary, both to take her away from her present husband, and to persuade her to return to David. Hereby David opened to him also a door of hope for his reconciliation, lest being desperate he should hinder Abner in his present design. My wife Michal; who, though she was taken from me by force, and constrained to marry another, 1 Samuel 25:44, yet is indeed my rightful wife. Her David demands, partly, for the affection he formerly had and still retained to her; partly, to deliver her from the sin and reproach of adultery with another man, who was not in truth and justice her husband, though he was so called and accounted; and partly, upon a politic consideration, that she might strengthen his right and title to the kingdom.