What does it mean that a man shall leave his father and mother (Genesis 2:24)?

But the Lord makes it transparently clear that the basic, original order in creation is not to be changed, but affirmed by the truth of the kingdom of heaven. God, in creating both male and female, made a marked distinction between them, but in marriage indicated a unity of vital character. Because of God's manifest order in creation it was right that a man should leave his father and mother and cleave to his wife. This verse settles many questions. First, when marriage takes place, the man (or woman) is no longer in the place of subjection to parents. Secondly, he cleaves to his wife:--only one wife, so that bigamy and polygamy are absolutely unscriptural. Cleaving to his wife involves genuine love for her, and faithfulness and devotedness.

The two are then recognized before God as being "one flesh." It is God Himself who has joined the two together. Therefore man has no authority to divorce them. Governments today of course ignore God's decree in this matter, but the word of God will not change to accommodate men's preferences. Marriage was from the beginning intended to be a binding agreement so long as both individuals remain alive.

Up to the time of a man's marriage the chief relationship in which he stands is that of a son, and his responsibility is towards his parents, but when he marries he leaves his father and mother and cleaves to his wife. Henceforward she becomes his chief care, for he and she are no more twain but one flesh.

Every right-minded man will look upon his wife as the only woman in the world for him, he will desire no other; and that not because he has chosen her for his wife, but because God has joined them together. He will look upon her as the very woman that God made for him; he will treat her as God's gift to him, and more, he will treat her as himself, for they twain have become one flesh; and that by no mere ordinance of man, but by God's own act and decree, hence "what God has joined together let not man put asunder."

Up to the time of a man's marriage the chief relationship in which he stands is that of a son, and his responsibility is towards his parents, but when he marries he leaves his father and mother and cleaves to his wife. Henceforward she becomes his chief care, for he and she are no more twain but one flesh.

As well as God's seeking to impress on us the reality of the relationship of Christ and the church, however, He is showing how close is the unity of husband and wife in God's sacred ordinance of marriage. Today this has been terribly violated by the selfish independence of both men and women, but God's word is plain, "For this cause a man shall leave his father and his mother, and shall cleave to his wife, and they shall become one flesh" (v.24). Thus God established marriage as the first of human relationships, and He makes it clear for all succeeding generations that a man should leave his father and mother and cleave to his wife. It is just as evident that the woman should leave her parents to become fully devoted to her husbands. The word "cleave" is beautiful here. It involves the reality of love, of devotedness and of faithfulness.

As well as God's seeking to impress on us the reality of the relationship of Christ and the church, however, He is showing how close is the unity of husband and wife in God's sacred ordinance of marriage. Today this has been terribly violated by the selfish independence of both men and women, but God's word is plain, “For this cause a man shall leave his father and his mother, and shall cleave to his wife, and they shall become one flesh” (v. 24). Thus God established marriage as the first of human relationships, and He makes if clear for all succeeding generations that a man should leave his father and mother and cling to his wife. It is just as evident that the woman should leave her parents to become fully devoted to her husband. The word “cling” is beautiful here. It involves the reality of love, of devotedness and of faithfulness.

Another feature of pious marriage life made prominent in this passage is that matrimonial union involves the establishment of a new household. The apostle says, “Because of this a man shall leave his father and mother and shall be united to his wife, and the two shall be one flesh” (ver. 31). By entrance into the marriage relationship, two parental homes are vacated, and a new Christian home set up by the married pair.

In our verse, "A man" would indicate a mature person who is able to take the positive decision to "leave" his parents, and the responsibility that goes with that decision.

Verse 24 puts on record the thought of God as to marriage from the outset, and to this the Lord Jesus appealed when answering the Pharisees, as recorded in Matthew 19:3-9. Deviation from this Divine thought and order, or worse still the denial of it, has probably been the cause of more sin and misery in the world than any other single fount of iniquity. When maturity is reached, a man is to leave father and mother and to found a new family, adhering to one woman as his wife. Thus they become one flesh. As we have just seen, Adam and Eve were one flesh to start with, since she was taken out of him.

"Therefore shall a man leave his father and his mother, and shall cleave to his wife; and they shall become (be for) one flesh. And they were both of them naked, the man and his wife, and were not ashamed" (vers. 24, 25). The former verse contemplates circumstances wholly different from those of Adam who had neither father nor mother to leave; the latter presents the facts which attached to the primeval condition and neither were nor could be with propriety at any other time. Shame followed sin: the knowledge of good and evil led them consciously fallen to cover themselves.

As marriage was to be the social bond, so is it the ground of family life; the oldest of all institutions relative, yet a fresh start for each man and woman so united, as ver. 24 contemplates. The work of God corresponds with His word. If a man was to leave his father and mother, he was to cleave to his wife, not to multiply wives. So had the Creator made one man and one woman. So had Jehovah Elohim ordained. Self-will too soon broke through the order, and sorrow followed personal and widespread, for man in nothing errs with impunity, even in a world out of course.

p123 [F Rowan] MY DEAR BROTHER, - As long as a child is of the household, actually in relationship with its parents, the duty of obedience remains. If a man is married, he begins a new house, and is the head of it, leaves his father and mother. But as long as he or she is of the house, obedience is the duty, as the relationship remains. "In the Lord" is the limit and character of the obedience. If I had a Jewish or heathen parent who commanded me to deny Christ, I could not do it. It is not "in the Lord." If the parent be merely unjust in ways, and no duty be compromised, I believe the part of children to be patience and casting themselves on the Lord. I can suppose a child engaged in a positive duty, which the parents in such case would have no right to cause the child to break through. "In the Lord" has nothing to do with the character of the parents, but the conduct of the child; otherwise it would absolve from all obedience the child of heathen or Jewish parents. The obedience is "in the Lord."