John 2: 23 While He (Jesus) was in Jerusalem for the feast of Passover, many began to believe in His Name when they saw the signs He was doing.
John 3:16-18 (Jesus was speaking to Nicodemus who was asking Him questions. Jesus said…) For God so loved the world that He gave His only Son, so that everyone who believes in Him might not perish but might have eternal life. For God did not send His Son into the world to condemn the world, but that the world might be saved through Him. Whoever believes in Him will not be condemned, but whoever does not believe has already been condemned, because he has not believed in the Name of the only Son of God.
John 5: 43 (Jesus said,) “I came in the Name of My Father, but you do not accept Me; yet if another comes in his own name, you will accept him.”
John 10: 24-26 So the Jews gathered around Him (Jesus) and said to Him, “How long are You going to keep us in suspense? If You are the Messiah, tell us plainly.” Jesus answered them, “I told you and you do not believe. The works I do in My Father’s Name testify to Me. But you do not believe, because you are not among My sheep.”