Jesus said to Peter, "Truly, truly I say to you, the rooster will not crow until you have denied me three times. Let not your heart be troubled. [You] believe in God, [You] believe also in me." When we worry, we seize control and make plans. But God has a plan that we would surrender control and never worry. So Peter, "let not your heart be troubled. Your plans are your trouble. Let not your heart be troubled. You believe, and that's the plan."