The Ransom for Many, John 1:29-34
Who you recognize Jesus to be determines how you respond to Jesus.
Suppose you see Jesus as an interesting historical figure of the first century. In that case, you may give a passing interest to his life and impact on the world but will pay little attention to him beyond what your curiosity will drive. If you see Jesus as a great moral person, you may respect him for the life he lived and think it may be a good idea to emulate his example. Suppose you see Jesus as a wise or insightful religious teacher. You may feel compelled to study his lessons and even incorporate his teachings into your life.
Toward the end of John's ministry and the beginning of Jesus', he saw Jesus coming toward him. He shouted for all to hear, "Behold the lamb of God who takes away the sin of the world!" He went on to say that Jesus was the son of God and the one for whom God had called him to prepare the way.
John wanted his disciples and all those who listened to him to know who Jesus is and what he came to do so that they might know true salvation found only in Jesus. Thus, he was focused on pointing the world to Jesus so that we might see who He is, know what He has done, and receive the gift of salvation.