Matthew 15:17
Do you not realize that whatever enters a person's mouth goes into his stomach and [eventually] passes out into the toilet?
1 Corinthians 6:13
"Food is for the stomach, and the stomach is for food;" but God will destroy both of them. Yet the body is not intended for sexual immorality, but is intended for the Lord's [honor and service]; and the Lord is for the body's [benefit].
Matthew 7:19-20
Every tree that does not produce wholesome fruit should be chopped down and thrown into the fire.
Luke 6:45
The good person produces good things from the goodness stored up in his heart. And the evil person produces bad things from the evil [stored up in his heart]. For his mouth speaks what his heart is filled with.
Colossians 2:21-22
"Do not handle [this]; do not taste [that]; do not touch [those things]?"
James 3:6
And the tongue is [like] a fire [i.e., like that spark]. [For] the tongue, as a part of the body, is [like] the world of evil. It corrupts the entire life [of a person] and inflames the course of nature itself [i.e., it affects a person throughout his whole earthly existence], and is ignited by hell itself [i.e., the evil produced by the fiery tongue has hell as its source and destiny].