Matthew 15:17
"Do not ye yet understand, that whatsoever entereth in at the mouth goeth into the belly, and is cast out into the draught?"
Cross References (ranked by relevance)
A good man out of the good treasure of his heart bringeth forth that which is good; and an evil man out of the evil treasure of his heart bringeth forth that which is evil: for of the abundance of the heart his mouth speaketh.
Meats for the belly, and the belly for meats: but God shall destroy both it and them. Now the body is not for fornication, but for the Lord; and the Lord for the body.
And they brake down the image of Baal, and brake down the house of Baal, and made it a draught house unto this day.
And the tongue is a fire, a world of iniquity: so is the tongue among our members, that it defileth the whole body, and setteth on fire the course of nature; and it is set on fire of hell.