Jesus answer to that.
“Then said they unto him, What shall we do, that we might work the works of God? Jesus answered and said unto them, This is the work of God, that ye believe on him whom he hath sent.” John 6:28-29
Powerful verse CB!......I have often wanted to do a study on belief.....since there is a difference between..."Knowing" and "Belief"..and "Faith"..I think...and the order of when we come to Christ.
Once you 'know', and that without Question, then it's settled....but it seems prior to knowing one might relate to Thomas...."I believe help thou my unbelief".....