In one movie some men were shipwrecked and left drifting aimlessly on the ocean in a lifeboat. As the days passed under the scorching sun, their rations of food and fresh water ran out. One man ignored all previous warnings and gulped down some seawater. He quickly died.

Ocean water contains seven times more salt than the human body can safely ingest. Drinking it, a person dehydrates because the kidneys demand extra water to flush the overload of salt. The more salt water someone drinks, the thirstier he gets. He actually dies of thirst.

When we lust, we become like this man. We thirst desperately for something that looks like what we want. We don’t realize, however, that it is precisely the opposite of what we really need. In fact, it can kill us.

“You have heard that it was said, ‘You shall not commit adultery’. But I tell you that anyone who looks at a woman lustfully has already committed adultery with her in his heart.”—Matthew 5:27-28.