Mark 10:8

and the two shall be one flesh. So, then, they are no longer two, but one flesh.

1 Corinthians 6:16

Know you not that he that is joined to a harlot, is one body? For the two, says the scripture, shall be one flesh.

Ephesians 5:28

So ought men to love their own wives as their own bodies. He that 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
Know you not that he that is joined to a harlot, is one body? For the two, says the scripture, shall be one flesh.
Ephesians 5:28
So ought men to love their own wives as their own bodies. He that loves his wife loves himself;

General references

Ephesians 5:31
For this cause a man shall leave his father and his mother, and shall cleave to his wife, and the two shall be one flesh.