I want to quote a few scripture passages to answer that. In Genesis 2:21-24 we read, “And the LORD God caused a deep sleep to fall on Adam, and he slept; and He took one of his ribs, and closed up the flesh in its place. Then the rib which the LORD God had taken from the man He made into a woman, and HE BROUGHT HER TO THE MAN. And Adam said: ‘This is now bone of my bones and flesh of my flesh; she shall be called Woman, because she was taken out of Man.’ Therefore a man shall leave his father and mother and be joined to his wife, and they shall become one flesh” (NKJV). Here we have the first marriage between a man and a woman and it is clear that it was God’s will. He made the woman from Adam and “He brought her to the man” so they could be united together as one in marriage. This means if God is “pointing you to someone for marriage, HE WILL NOT CHANGE HIS MIND.

Now let’s read a few verses in Matthew chapter 19. The Pharisees had asked Jesus in verse 3: “Is it lawful for a man to divorce his wife for just any reason?” Jesus replied with these words in verses 4-6, “Have you not read that He who made them at the beginning ‘made them male and female,’ and said, ‘For this reason a man shall leave his father and mother and be joined to his wife, and the two shall become one flesh’? So then, they are no longer two but one flesh. Therefore WHAT GOD HAS JOINED TOGETHER, LET NO MAN SEPARATE.” If God has truly joined a man and woman together they are now looked upon by God as one and no man should separate them. This was God’s original plan for marriage and HE HAS NOT CHANGED HIS MIND.

This does not mean a marriage will be perfect, for as soon as sin entered the world problems in marriage also entered in. We see that in the case of Adam and Eve, for when the serpent (the Devil) tempted the woman to eat of the forbidden fruit in the Garden of Eden “she took of its fruit and ate. She also gave to her husband with her, and he ate” (Genesis 3:6). Thus the woman, who had acted independently of her husband in the first place, then tempted Adam to join her in her rebellion against God and he succumbed to her temptation by eating of the fruit. As we read on in the Old Testament we see example after example of problems in marriages and yet God never told men and women that “He had brought together in holy matrimony” to divorce. In other words, HE NEVER CHANGED HIS MIND.

Yet there is ONE PROBLEM in a marriage which does cause God to change His mind. The Pharisees had asked if a man could divorce his wife “for just ANY REASON,” and the Lord’s answer was “no.” Now let’s read on in Matthew 19:7-9, “They (the Pharisees) said to Him, ‘Why then did Moses command to give a certificate of divorce, and to put her away?’ He said to them, ‘Moses, because of the hardness of your hearts, permitted you to divorce your wives, but from the beginning it was not so. And I say to you, whoever divorces his wife, EXCEPT FOR SEXUAL IMMORALITY, and marries another, commits adultery; and whoever marries her who is divorced commits adultery.” God “allowed” Moses to permit men to divorce their wives for many reasons due to the “hardness of their hearts.” He still DID NOT CHANGE HIS MIND about His original intent for a man and woman to stay together as one for life, but He was willing to tolerate divorce because of man’s wicked heart. But then Jesus states emphatically that there is ONE REASON that justifies divorce, and that reason is ADULTERY. In that one case GOD CHANGES HIS MIND. Why? Because the act of adultery, which is a “physical union of one spouse with one who isn’t their spouse,” is an “unholy union” that is grounds for dissolving the union of a man and his wife. In this ONE CASE (of ADULTERY) God doesn’t just “allow” divorce but He “sanctions” it. In other words, if a divorce takes place due to adultery, GOD HAS CHANGED HIS MIND. He had the right in the beginning to “bring them together”; He also has the right, in His holiness, to “separate them.” (417.5)  (DO)