78. That to "commit adultery" means also to do obscene things, to speak lascivious things, and to think about filthy things, is evident from the Lord's words in Matthew:
Ye have heard that it was said to them of old time, Thou shalt not commit adultery but I say unto you that whosoever looketh on the woman of another to lust after her hath committed adultery with her already in his heart (5:27, 28).