30 As Jesus spoke these things, many believed in Him.
John 8:30 Cross References - BSB
John 2:23
23 While He was in Jerusalem at the Passover Feast, many people saw the signs He was doing and believed in His name.
John 6:14
14 When the people saw the sign that Jesus had performed, they began to say, “Truly this is the Prophet who is to come into the world.”
John 7:31
31 Many in the crowd, however, believed in Him and said, “When the Christ comes, will He perform more signs than this man?”
John 10:42
42 And many in that place believed in Jesus.
John 11:45
45 Therefore many of the Jews who had come to Mary, and had seen what Jesus did, believed in Him.