Prove to the deaf that there is a sense of hearing; sight to the blind.
Faith is the greatest of all, and you only have to initiate contact with a desire to truly know. If you are truthful in your heart about that desire, He will answer the knock on His door.
What happens after is remarkable.
When my husband’s grandfather died a few years ago, he left us over a period of days in the hospital.
He was probably the most Godly man I’ve ever known, but not in a lord-it-over-you way...he was completely humble.
The things he said, and saw, as he lay dying in that hospital, would have convinced me to investigate Christianity if I were a non-believer. There was an atmosphere in the room that was almost holy...even the doctors and nurses said they hadn’t seen anything like it.
Personally I think the Lord did it not only to ease him over, but to give us reassurance.