Mark 10:8

and the two will become one flesh.

So they are no longer two, but one flesh.

1 Corinthians 6:16

Don’t you know that anyone joined to a prostitute is one body with her? For Scripture says, The two will become one flesh.

Genesis 2:24

This is why a man leaves his father and mother and bonds with his wife, and they become one flesh.

Ephesians 5:28

In the same way, husbands are to love their wives as their own bodies. He who loves his wife loves himself.

Treasury of Scripture Knowledge

Summary

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

General references

Bible References

One flesh

1 Corinthians 6:16
Don’t you know that anyone joined to a prostitute is one body with her? For Scripture says, The two will become one flesh.
Ephesians 5:28
In the same way, husbands are to love their wives as their own bodies. He who loves his wife loves himself.

General references

Ephesians 5:31
For this reason a man will leave
his father and mother
and be joined to his wife,
and the two will become one flesh.

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.