Mark 10:8

And they two shall be in one flesh: so that they are no more two, but one flesh.

1 Corinthians 6:16

Or know ye not that he joined to a harlot is one body? for they shall be, he says, they two into one flesh.

Genesis 2:24

Therefore a man will leave his father and his mother and will cleave to his woman; and they shall be into one flesh.

Ephesians 5:28

So ought men to love their own wives as their own bodies. He loving 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
Or know ye not that he joined to a harlot is one body? for they shall be, he says, they two into one flesh.
Ephesians 5:28
So ought men to love their own wives as their own bodies. He loving his wife, loves himself.

General references

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