John 4:48
Jesus said to him, 'Unless you people see signs and wonders, you will not believe.' — Jesus' reproach addresses the Galileans' (and the official's) faith based on miracles rather than on his word. The plural you (humeis) extends the critique beyond the individual to the crowd. Signs and wonders (semeia kai terata) are theologically necessary but spiritually insufficient; they can lead to spectacular but shallow belief.