Reference

Mark 10:8

And they twain shall be one flesh: so then they are no more twain, but one flesh.
6

But from the beginning of the creation God made them male and female.

7

For this cause shall a man leave his father and mother, and cleave to his wife;

8

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

9

What therefore God hath joined together, let not man put asunder.

10

And in the house his disciples asked him again of the same matter.