Adultery
"Thou shalt not commit adultery."
"whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart."
"Thou shalt not commit adultery ... nor do anything like unto it."
"He that looketh on a woman to lust after her, or if any shall commit adultery in their hearts, they shall not have the spirit, but shall deny the faith and fear"
Like D&C 63:16