John 12:37

Even though he had performed all these miracles in their presence, they did not believe in him, (John 12:37)

Three points:

1. He performed

He did these miracles. People laugh today and ridicule saying, "Where is the proof these things happened?" There where many witnesses present, the Gospels were written in the first century, and they could have been debunked quickly, if they were false.

2. Miracles do not make converts

I have heard a number of people say that miracles would make many converts. But miracles done by Jesus himself in their very presence did not make many converts. The people in the towns where Jesus had performed most of his miracles did not turn from their sins, so he reproached those towns. (Matthew 11:20) and But Abraham said, 'If they will not listen to Moses and the prophets, they will not be convinced even if someone were to rise from death.' " (Luke 16:31)

3. Believe in Him

It is by faith that we are forgiven. Even though these miracles were done in their presence, faith was needed. Even seeing is not believing, if they refuse to believe. We need to have faith. The facts are here, it is reasonable, we can believe. All the prophets spoke about him, saying that all who believe in him will have their sins forgiven through the power of his name." (Acts 10:43)