First, the Law of Moses Allowed Divorce, Only Because of the Hardness of Their Hearts (Matt. 5:31; 19:8).
Jesus said, “It was also said, ‘Whoever divorces his wife, let him give her a certificate of divorce’” (Matt. 5:31). The phrase, “it was said,” refers to the Law of Moses. Deut. 24:1 says, “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 certificate of divorce and puts it in her hand and sends her out of his house, and she departs out of his house.” It is clear that the Mosaic Law allowed divorce.
But Jesus explained that it was a concession for hard hearts. Jesus said, “Because of your hardness of heart Moses allowed you to divorce your wives, but from the beginning it was not so” (Matt. 19:8). Note the verb, “allowed.” Jesus said that Moses allowed divorce, because of their hard hearts.
The hardness of their hearts refers to their sinful, rebellious hearts. There are many people like that today. They believe God. But they do not obey God. Mutoo sila sa Dios. Pero dili sila magpatuo sa Dios. They go to church every Sunday. But they disobey God from Monday to Saturday. They have hard hearts. You hear God’s Word. But you do not obey God’s Word. You have a hard heart.
But divorce was not originally the will of God. Moses allowed it, but God did not like it. Thus, divorce was a concession for them, not a command for them. Perhaps it was meant to prevent other serious sexual sins—adultery, promiscuity, etc. But it was a Law that was not the will of God from the beginning.