For this cause, a man shall leave his father and his mother and shall cleave to his wife, and they shall become one flesh, and the man and his wife were both naked, and they were not ashamed. (Genesis 2:24-25)
It is very clear that a NEW relationship is formed by Man and Woman. The one flesh does NOT include children or parents or anyone else. This makes marriage a totally unique relationship, it exceeds ALL other relationships except the relationship with God.
When you marry, you could very likely spend the next 70 years with one person at almost all times. Parents, they don't live with you, you see them a few times a year. Children, they leave after 18 years. So how on earth could ANY of these people be AS important as your spouse who you will spend almost every minute with for 70 years?
