“If you believe the Torah is from Hashem, then the whole issue is very plausible. We learn that everything is contained in the Torah, this is just one of the methods of deciphering it. “
Granted, except for a major problem: As the Gemara says We arent bekium in chaserus veyeseiros. In other words the exact number of letters in the Torah recieved at Sinai is unknown. This doesnt make much practical difference to our day to day lives. But the premise of the Torah codes invloves exact knowledge of letters and equal spaces between them. What Torah do you use? Ashkenazi? Yemenite? The Gemara’s which has some maleh casers we dont? Rashi’s “Ves kol ahser etzavicha”?