Genesis 2:24 Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.
Proverbs 127:1-5 Except the LORD build the house, they labour in vain that build it: except the LORD keep the city, the watchman waketh but in vain. It is vain for you to rise up early, to sit up late, to eat the bread of sorrows: for so he giveth his beloved sleep. Lo, children are an heritage of the LORD: and the fruit of the womb is his reward. As arrows are in the hand of a mighty man; so are children of the youth. Happy is the man that hath his quiver full of them: they shall not be ashamed, but they shall speak with the enemies in the gate.
Exodus 20:12 Honour thy father and thy mother: that thy days may be long upon the land which the LORD thy God giveth thee.
Proverbs 22:6 Train up a child in the way he should go: and when he is old, he will not depart from it.
The Lord Jesus stated:
Mark 10:6-8 But from the beginning of the creation God made them male and female. For this cause shall a man leave his father and mother, and cleave to his wife; And they twain shall be one flesh: so then they are no more twain, but one flesh.
The Apostle Paul writes:
Ephesians 6:2 Honour thy father and mother; which is the first commandment with promise;
Colossians 3:20 Children, obey your parents in all things: for this is well pleasing unto the Lord.
1 Timothy 3:5 (For if a man know not how to rule his own house, how shall he take care of the church of God?)
1 Timothy 5:8 But if any provide not for his own, and specially for those of his own house, he hath denied the faith, and is worse than an infidel.
As one studies the word of God, we can see the family: Husband (man), Wife (woman) were to produce children and they were a FAMILY.
IT WAS GOD’s PLAN from the beginning.