“Honor your father and your mother, that your days may be long upon the land which the Lord your God is giving you” (Exodus 20:5).
The apostle Paul wrote,
"Because of this, a man will leave his father and mother and be joined to his wife and the two will be into one flesh" (Ephesians 5:31).
Because of this? Because of what? Would a man or a woman leave his/her father and mother and be joined to his/her wife/husband if there is no sex involved? Would anyone do such weird thing? Or, is sex more important than honoring your father and mother?
For some ungrateful children, sex is more important than honoring their parents. They dishonor, humiliate and insult their parents and the family by the choices they made in selecting their sex partners. Instead of thoughtfully and carefully selecting their sex mates, they completely ignored and disregarded their parents' counsel and do whatever they want to do, dismissing their parents' feelings as if parents don't exist. I know of a man who gave his fiancee a $10.00 bad check while dating her. After they are married, she found out that he has two other women in New York who bore two of his children out of wedlock. For more than two decades the wife has to work long hours each day to support her husband and their small children because the man does not want to work for fear that his small salary will be garnished by the court for child support.
Sex is the greatest devil's temptation that every Christian has to deal with each day and night. For example, one church morning the announcer at church gave a surprising notice that our pastor is retiring at the end of the month. I have been following him for about 20 years. He gave good sermons. I felt bad when I heard that he abruptly stop serving our church. A week later, however, I found out that he left because he eloped with a younger woman, also a pastor but from a different church. I felt worse when I heard what he did. He left his old wrinkled wife in exchange for sex with a younger woman half his age.
Here's another true story. "Because of this," a young woman married a man whom she should have never married. This young woman has a lot of bright future ahead of her. She is intelligent and did well in school. After she is married and has one daughter, she noticed that her husband is mentally ill (acutely crazy). Her husband's mother is a "new-born" Christian. She has been praying for some miracles to occur - that God will heal her son. The young woman knew of her husband's history of mental illness before she married him, yet she ignored the risk and proceeded to marry him anyway - "because of this."
She is now separated or divorced and lives with another man twice her age that is worse than her first husband. Moral of the story - it is hard to change a bad habit, "because of this."