This was taken from Gotquestions.org My version has been lost to the endless pages on this topic
In the first few chapters of Genesis, God fills the earth with large numbers of different kinds of life. He doesn't just put a few fish in the ocean; it "abounds" with them. But when it comes to mankind, He makes just one male and one female, and those two were to become "one flesh." The implication from
Genesis 2:24 is that this "one woman for one man for one lifetime" was a principle not just for Adam and Eve but for all who would be born to a father and mother. Jesus commented on this Genesis passage when the Jewish leaders brought up the topic of divorce: "But from the beginning of the creation, God made them male and female. 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 not man separate" (
Mark 10:6-9).
Marriage is the union of a man and a woman, creating a new entity, a new whole (one flesh). This union is brought about by a mutual commitment before God (expressed through a public vow today) to forsake all others, to keep themselves only unto their new partner, and to act in the best interest of the other (to love), and to seek to fulfill Gods purposes for their lives as a new unit. This commitment is to last as long as they both shall live (
1 Corinthians 7:39).
Marriage is not merely a friendship. Although it is not the consummation that begins the actual marriage (or Joseph and Mary would not have been married until after Christ was born (
Matthew 1:25), sexual activity is understood to be a natural part of marriage (
Exodus 21:10;
Hebrews 13:4). Today, the exchanging of the vows during a wedding ceremony is the vocalization of the commitment that was understood between biblical couples such as Isaac and Rebekah in
Genesis 24:67.
Some of Gods purposes for marriage as stated in the Bible are companionship (
Genesis 2:18), procreation (
Genesis 1:28), mutual and undefiled pleasure (
1 Corinthians 7:4-5;
Proverbs 5:18-19; Song of Solomon;
Hebrews 13:4), prevention of immorality (
1 Corinthians 7:2,
5), the serving of Christ as a whole and properly representing the spiritual relationship between Christ and the Church (
Ephesians 5:22-33), and the raising of godly descendants (
Malachi 2:13-16). The bond of marriage (when respected) leads to the good of not only the couple and their children, but also to the good of the society as a whole, for the family unit is the building block of any society.