Scripture Says,

Scripture says, “…they shall become one flesh.” (Genesis 2:24) “One” (eḥāḏ) “stresses unity while recognizing diversity within that oneness.” “It has the idea of unity or integrity as when it designates one justice for all.” I especially appreciate an illustration from the book “Love Is A Choice.” What Moses was writing “is the picture that is seen in a figure-skating couple gliding across the ice. The man and woman intertwine their arms and legs, spinning and twirling in perfect synchronized movements with music playing. Their movements are individual, different, yet carefully executed so that you see them as one working unit. Then suddenly they part ways and move in opposite directions, spin in perfect unison, they come together again, creating a beautiful picture of two people living as “one-flesh.” (Marriage, From Surviving to Thriving, Swindoll)

The Christian marriage surrendered to the Lordship of Christ as head of the relationship has individual movements which are different, yet present to an on looking world a picture of unity, a couple working in harmony for the glory of God who created the marriage covenant.