'One Flesh' in the Bible

Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.

And said, For this cause shall a man leave father and mother, and shall cleave to his wife: and they twain shall be one flesh?

Wherefore they are no more twain, but one flesh. What therefore God hath joined together, let not man put asunder.

For this cause shall a man leave his father and mother, and the two shall be one flesh;

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

What? know ye not that he which is joined to an harlot is one body? for two, saith he, shall be one flesh.

All flesh is not the same flesh: but there is one flesh of men, and another flesh of beasts, and another flesh of birds, and another of fishes.

For this cause shall a man leave his father and mother, and shall be joined unto his wife, and they two shall be one flesh.