Mark 10:8

and the two will become one flesh,' so that they are no longer two but one flesh.

Or do you not know that the one who joins himself to a prostitute is one body [with her]? For it says, "The two will become one flesh."

Therefore a man shall leave his father and his mother and shall cling to his wife, and they shall be as one flesh.

Thus also husbands ought to love their own wives as their own bodies. The one who loves his own wife loves himself.

Treasury of Scripture Knowledge

And they twain shall be one flesh: so then they are no more twain, but one flesh.

Or do you not know that the one who joins himself to a prostitute is one body [with her]? For it says, "The two will become one flesh."

Thus also husbands ought to love their own wives as their own bodies. The one who loves his own wife loves himself.

"For this [reason] a man will leave his father and mother and be joined to his wife, and the two will become one flesh."