John 1:23
1:23 John said, “I am the voice of one shouting in the wilderness, ‘Make straight the way for the Lord,’ as Isaiah the prophet said.”
John 5:28
5:28 “Do not be amazed at this, because a time is coming when all who are in the tombs will hear his voice
John 5:37
5:37 And the Father who sent me has himself testified about me. You people have never heard his voice nor seen his form at any time,
John 10:3-5
10:3 The doorkeeper opens the door for him, and the sheep hear his voice. He calls his own sheep by name and leads them out.
10:4 When he has brought all his own sheep out, he goes ahead of them, and the sheep follow him because they recognize his voice.
10:5 They will never follow a stranger, but will run away from him, because they do not recognize the stranger’s voice.”
John 12:29
12:29 The crowd that stood there and heard the voice said that it had thundered. Others said that an angel had spoken to him.