About 12,000 years or so ago God created man, named him Adam, gave him dominion over all beasts, fish, and foul, and tasked him with naming all the critters found under the sun. God saw that Adam needed help and, after see that none of the animals were adequate, formed Eve out of one of Adam's ribs.
Genesis 2:19-24 KJV
And out of the ground the Lord God formed every beast of the field, and every fowl of the air; and brought them unto Adam to see what he would call them: and whatsoever Adam called every living creature, that was the name thereof. And Adam gave names to all cattle, and to the fowl of the air, and to every beast of the field; but for Adam there was not found an help meet for him. And the Lord God caused a deep sleep to fall upon Adam, and he slept: and he took one of his ribs, and closed up the flesh instead thereof; And the rib, which the Lord God had taken from man, made he a woman, and brought her unto 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 shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.
Does this sound familiar to you? It should. This is the go-to verse for most theologians and pontificaters when defending the sanctity of marriage between man and woman. In today's collective conversation the definition of marriage as we know it is quickly changing. Though the basic "union between two individuals" remains intact, the timeless unspoken notion "between man and woman" is no longer the standard. Now, marriage can be heterosexual or homosexual in nature.
Wives are to be helpers and companions, not objects to possess or enslave. Men are not meant to be slothful, or apathetic, or disconnected. There must be a balance of both spiritual and physical attributes for marriage to succeed. Where the man is weak, the woman must be strong, and the opposite is true. Marriage is a never-ending circle of give and take. Not in the typical materialistic or emotional sense that most folks would imagine. Where the man is incomplete, the woman gives of herself to fill that void, where the woman is incomplete, the man gives of himself.
Some years ago the reported average mortality rate of marriage was 5 in 10. However there has been a recent drop in that number and studies show that those who hold some form of faith, whatever it may be, tend to stay married. Christians seem to hold the lowest average divorce rate, while those with no faith (atheists) have the highest. Despite margins of error these numbers prove that it is healthier for marriages if both spouses have a strong spiritual connection.
Since there is no shortage of conversations, debates, doctrinal comparisons and plain arguments over who is right or wrong concerning the Biblical validity of heterosexual marriages, I do not intend to put in my own two cents; That is a different article altogether. With that being said, heterosexual unions, while found in the Bible, are not God's idea of marriage.
Here are some good Bible verses about marriage and relationships. I don't intend to interpret them and I urge you to read them in their entire context.
1. Marriage is honourable in all, and the bed undefiled: but whoremongers and adulterers God will judge. - Hebrews 13:4 KJV
2. Husbands, love your wives, even as Christ also loved the church, and gave himself for it - Ephesians 5:25 KJV
3. Who can find a virtuous woman? for her price is far above rubies. The heart of her husband doth safely trust in her, so that he shall have no need of spoil. She will do him good and not evil all the days of her life. - Proverbs 31:10-12
4. And the Lord God said, It is not good that the man should be alone; I will make him an help meet for him. - Genesis 2:18 KJV
5. Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness? - 2 Corinthians 6:14 KJV
6. Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body. - 1 Corinthians 6:18 KJV