It happened that when Jesus finished these words, he left Galilee, and went to the regions of Judea on the other side of the Jordan. 2 And great crowds followed him, and he healed them there. 3 Then the Pharisees came to him, tempting him and saying, "Is it lawful for a man to put away his wife for any reason?" 4 He, answering, said to them, Have you not read that he who made them in the beginning made them male and female, 5 and said: For this reason a man will leave father and mother, and be united to his wife, and the two will be a single meat? 6 So they are no longer two, but one flesh; therefore, what God has joined together, let not man separate. 7 They said to him, "Why then did Moses command to give a bill of divorce, and to put it away?" 8 He said to them: Because of the hardness of your hearts Moses allowed you to put away your wives; but at first it was not like that. 9 And I tell you that whoever divorces his wife, except for the sake of fornication, and marries another, commits adultery; and whoever marries the disowned woman commits adultery. Matthew 19: 1-9 King James Version (KJV)
In this text Jesus frankly addresses a fundamental issue: the cause of divorce is hardness of heart.
Behind every broken marriage there is a heart hardened against God, and then hardened against the partner (spouse). From the very beginning, God's intention regarding marriage is for life. With this in mind, believers should be careful when choosing a partner (2 Cor 6:14). Despite this, no marriage is completely free from the differences and difficulties that could lead to divorce if the husband and wife were disappointed in their natural inclinations.
The devil will exaggerate the failings and inadequacies of the spouse, sow suspicion and jealousy, provoke self-pity, insist that you deserve better, and make the deceptive promise that things would be better with someone else. But listen to the words of Jesus and remember: God can change hearts and remove all their hardness if only we allow it.