@MLindley That is simple, a man (adult) will leave his father and mother and will cleave to his wife (mature woman). Manhood and womanhood begins at puberty. Children are not 'past the age of their bloom' as the Scriptures says...then let them marry (for physical union to bring forth children). That is referred to by scriptures as falling under sexual sins such as concupiscence I Thes 4:5;Rom 7:8 & Col 3:5. Romans 1 also speaks to warping God's original design for procreation.