Deuteronomy 24:1-4 reads as follows: “‘[1]When a man takes a wife and marries her, if then she finds no favor in his eyes because he has found some indecency in her, and he writes her a bill of divorce and puts it in her hand and sends her out of his house, and she departs out of his house, [2] and if she goes and becomes another man's wife, [3] and the latter husband dislikes her and writes her a bill of divorce and puts it in her hand and sends her out of his house, or if the latter husband dies, who took her to be his wife, [4] then her former husband, who sent her away, may not take her again to be his wife, after she has been defiled; for that is an abomination before the Lord, and you shall not bring guilt upon the land which the Lord your God gives you for an inheritance’”
Divorce was tolerated but do to hardness of heart.
Today we have forgiveness thru Grace
Divorce was rare in OT times for one paid a high price to get the lady you wanted