Mark 10:8

and the two shall become one flesh." So they are no longer two, but one flesh.

1 Corinthians 6:16

Know ye not, that he who is connected with a harlot is one body with her? "For the two," saith he, "shall become one flesh;"

Ephesians 5:28

In like manner husbands ought to love their own wives as their own bodies. He that loveth his own wife loveth 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 ye not, that he who is connected with a harlot is one body with her? "For the two," saith he, "shall become one flesh;"
Ephesians 5:28
In like manner husbands ought to love their own wives as their own bodies. He that loveth his own wife loveth himself;

General references

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