'Troubled' in the Bible

But the king of Israel, after reading the letter, was greatly troubled and said, Am I God, to give death and life? why does this man send a leper to me to be made well? is it not clear that he is looking for a cause of war?

Now Elisha, the man of God, hearing that the king of Israel had done this, sent to the king, saying, Why are you troubled? send the man to me, so that he may see that there is a prophet in Israel.

And at this, the mind of the king of Aram was greatly troubled, and he sent for his servants and said to them, Will you not make clear to me which of us is helping the king of Israel?

And Isaiah said to them, This is what you are to say to your master: The Lord says, Be not troubled by the words which the servants of the king of Assyria have said against me in your hearing.