Deuteronomy 24:3
And if the latter husband hate her, and write her a bill of divorcement, and giveth it in her hand, and sendeth her out of his house; or if the latter husband die, which took her to be his wife; And if the latter husband hate her, and write her a bill of divorcement, and giveth it in her hand, and sendeth her out of his house; or if the latter husband die, which took her to be his wife;
The verse describes the ending of a second marriage, when the latter husband hates his wife and ends the union by writing her a bill of divorcement and giving it into her hand and sending her out of his house, or when that latter husband who took her to be his wife dies. It belongs to Israel's social and civil laws regulating divorce and remarriage, which permitted a husband who no longer wanted his wife to divorce her in writing, but only under certain restrictions. That permission for separation and remarriage was tolerated as a concession to human blindness and hardness of heart, not as part of God's original plan for marriage. In its specific legal form as a law given to Israel it is not binding on people today, though its underlying principles remain binding.
Together with its context the verse is part of the rule forbidding a woman who has left her first husband and become another man's wife to return and marry the first husband again. The following restriction checks the harm of this arrangement, preventing shame and confusion. Under the Mosaic law the woman could marry again after such a divorce. The passage countenances marrying a second and a third time, so that after a spouse is taken by death the survivor may marry again and be joined in one flesh in a divine marriage, and after sorrow is over can truly love another equally with the first.
Christ Himself stands behind this instruction about remarriage because the whole word of God came through Him, even though there is no account of Him discussing second marriage in His earthly statements. Christ's teaching restricts divorce and remarriage to the case of fornication, so that a man who marries the guilty woman commits adultery. The verse shows the divorce law that Moses commanded and wrote, which Jesus affirmed that Moses commanded and wrote when answering about divorce, proving Moses was the human author of the Pentateuch. In Greek the bill of divorcement is the book of apostasy, a term used by Christ, where apostasy signifies rebellion, withdrawal, turning away, despising, and proving untrue like a false-hearted companion toward one with whom lifelong union was solemnly promised, and this illustrates how natural it is to backslide, as seen in the course of the professed church since apostolic times and for ages before the Christian era.