Once, when he was praying by himself and only the disciples were with him, he asked them, “Who do the crowds say that I am?”
In context
16Then he took the five loaves and the two fish, looked up to the sky, blessed them, broke them and kept giving them to the disciples to serve to the crowd. 17They all ate their fill, and what was left over was gathered up: twelve baskets of pieces. 18Once, when he was praying by himself and only the disciples were with him, he asked them, “Who do the crowds say that I am?” 19They answered, “John the Baptist; others say Elijah; others, that one of the prophets of old has risen.” 20“And you,” he said, “who do you say that I am?” Peter answered, “The Christ of God.”