Matthew 14:27-31

But Jesus quickly spoke to them, “Have courage! It is I. Do not be afraid.” Peter said, “Lord, if it is really you, then command me to come to you on the water.” Jesus said, “Come.” And Peter left the boat and walked on the water to Jesus. But when Peter saw the wind and the waves, he became afraid and began to sink. He shouted, “Lord, save me!” Immediately Jesus reached out his hand and caught Peter. Jesus said, “Your faith is small. Why did you doubt?”