Jesus sent his disciples ahead of him to Bethsaida by boat while he stayed to pray. Later he saw that they were in difficulty due to a wind blowing against them, so he went to them, walking on the water.

Mark 6:45-52

45 Right away Jesus told his disciples to get into the boat and then go ahead of him to Bethsaida town, which was further around Lake Galilee. He stayed and dismissed the many people who were there. 46 After he said goodbye to the people, he went up into the hills in order to pray. 47 When it was evening, the disciples’ boat was in the middle of the lake and Jesus was by himself on the land. 48 He saw that the wind was blowing against them as they rowed. As a result, they were having great difficulty. He approached them early in the morning, when it was still dark, by walking on the water. He intended to walk by them. 49 They saw him walking on the water, but they thought that he was a ghost. They screamed 50 because they all were terrified when they saw him. But he talked to them. He said to them, “Be calm! Do not be afraid, because it is I!” 51 He got into the boat and sat down with them and the wind immediately stopped blowing. They were completely amazed about what he had done. 52 Although they had seen Jesus multiply the bread and the fish, they did not understand from that how powerful he was, as they should have. They did not think clearly about it.