# What does Jesus tell the Jews to do in order to determine whether to believe him or not?

Jesus tell the Jews to look at his works. If Jesus isn't doing the works of his Father, don't believe him. If he is doing the works of his Father, believe him. 

# What does Jesus say the Jews could know and understand if they would believe in the works that Jesus did?

Jesus said they could know and understand that the Father is in Jesus and that Jesus is in the Father. 