'Fear Not' in the Bible

David said to him, “Do not be afraid, for I will certainly show you kindness for the sake of your father Jonathan, and will restore to you all the land of your grandfather Saul; and you shall always eat at my table.”

Now Absalom commanded his servants, “Notice carefully, when Amnon’s heart is joyous with wine, and when I say to you, ‘Strike Amnon,’ then kill him. Do not be afraid; have I not commanded you myself [and in doing so have I not taken full responsibility for his death]? Be courageous and brave.”