I grew up with the belief that what I took into my mouth could determine the outcome of my salvation–where I spent eternity. Jesus, the great professor, taught otherwise–see Matthew 15. He said, it’s not what goes in the mouth but what comes out of the mouth–or out of the heart. It’s a heart matter, not a stomach one.
P.S. I was always amazed at how what I ate determined the “purity” of my heart. The “better” (More vegetarian or vegan or the more clean my meat) I ate the more impure my heart became, the more judgmental I became of others and what they ate or didn’t eat, and the “holier” I felt–all the while my heart was enlarging with poison.