Exodus 20:14
Thou shalt not break wedlock.
Thou shalt not commit adultery.
The seventh commandment is most familiar today in the King James Bible version, which follows the language of the Geneva Bible here. The “wedlock” version in the Great Bible (based on the earlier translation of William Tyndale) sounds quaint to modern ears; it is also difficult to apply that language to sex before marriage, which is included in some definitions of adultery.