Is it really true?

The next day John was standing there again with two of his disciples, when he saw Jesus walking by. “There is the Lamb of God!” he said. The two disciples heard him say this and went with Jesus. Jesus turned, saw them following him, and asked, “What are you looking for?” They answered, “Where do you live, Rabbi?” (This word means “Teacher”.) “Come and see,” he answered. (It was then about four o'clock in the afternoon.) So they went with him and saw where he lived, and spent the rest of that day with him. One of them was Andrew, Simon Peter's brother. At once he found his brother Simon and told him, “We have found the Messiah.” (This word means “Christ”.) Then he took Simon to Jesus. Jesus looked at him and said, “Your name is Simon son of John, but you will be called Cephas.” (This is the same as Peter and means “a rock”.) Jesus Calls Philip and Nathanael The next day Jesus decided to go to Galilee. He found Philip and said to him, “Come with me!” (Philip was from Bethsaida, the town where Andrew and Peter lived.) Philip found Nathanael and told him, “We have found the one whom Moses wrote about in the book of the Law and whom the prophets also wrote about. He is Jesus son of Joseph, from Nazareth.” “Can anything good come from Nazareth?” Nathanael asked. “Come and see,” answered Philip. When Jesus saw Nathanael coming to him, he said about him, “Here is a real Israelite; there is nothing false in him!” Nathanael asked him, “How do you know me?” Jesus answered, “I saw you when you were under the fig tree before Philip called you.” “Teacher,” answered Nathanael, “you are the Son of God! You are the King of Israel!” Jesus said, “Do you believe just because I told you I saw you when you were under the fig tree? You will see much greater things than this!” And he said to them, “I am telling you the truth: you will see heaven open and God's angels going up and coming down on the Son of Man.”