'Sick' in the Bible

Then Nathan went [back] to his home.And the Lord struck the child that Uriah’s widow bore to David, and he was very sick.

Amnon was so frustrated because of his [half-] sister Tamar that he made himself sick, for she was a virgin, and Amnon thought it impossible for him to do anything to her.

Jonadab said to him, “Go to bed and pretend you are sick; and when your father [David] comes to see you, say to him, ‘Just let my sister Tamar come and serve me food, and let her prepare it in my sight, so that I may see it and eat it from her hand.’”

So Amnon lay down and pretended to be sick; and when the king came to see him, Amnon said to the king, “Please let my sister Tamar come and make me a couple of cakes in my sight, so that I may eat from her hand.”