Then the LORD said, “If no one believes either of these miracles, take some water from the River Nile and pour it on the ground. The water will immediately turn into blood.”
If he is the Messiah, the king of Israel, let him come down from the cross! Then we will see and believe.” The two criminals also said cruel things to Jesus.
But if I do what my Father does, you should believe because of that, even if you don't have faith in me. Then you will know for certain that the Father is one with me, and I am one with the Father.
God himself showed that his message was true by performing all kinds of powerful miracles and wonders. He also gave his Holy Spirit to anyone he chose to.