I’m once again in solid paraphrasing territory here, but
T. Rex, while known for his biting prowess, was also reputed to be diligent in studying his Bible.
The logistics of a sizable thunder lizard being able to use his puny hands to turn the pages of said Bible were left unvisited.
Honestly I don’t know what is more strange, the fact that you found an image of Jesus on a dinosaur or your sons odd obsession of relating everything to T-Rex’s.