"But what comes out of the man, that is what defiles him. From within the man, from his heart, come evil thoughts, unchastity, theft, murder, adultery, greed, malice, deceit, licentiousness, envy, blasphemy, arrogance, folly. All these evils come from within and they defile."
There's a lot of truth to what Jesus said, what comes out of us is what defiles us. Basically what our heart's and minds desire. It can be the hardest thing to say a person is bad because they lust after another. We all are good, but what makes us holy and what does not is how we think.
When we think about committing theft, murder, malice, deceit we are not holy. We are planning what evil we will do to another. It's not hard to understand when we think these things we go against the kingdom of God. They do defile, they make a person unclean in spirit.
If any do and think of some of these things without realizing it, then try something for yourself. Take a moment and reflect on how you really feel when we have thoughts of envy, arrogance, folly, deceit and malice. Think about it! The feeling isn't pleasant. Next, take a moment and think about the moments when you were kind to another person, when your thoughts were based on good thoughts for another rather than thinking of how envious we are. There is a difference in how we are and how we feel when we remove what makes us vile.
It's like eating something that is not good, and causes us to get sick. What are we most likely to do when we get ill in such a way? We try to make ourselves feel better. Our bodies also let us know there is a sickness within after eating something not good. The same when we begin to think in the way that is vile rather than good. We all have free will and a choice on how we live and conduct ourselves. I've chosen to care about my heart, mind and soul and watch with care what comes from me. Do you? In this sense the saying, "We are what we eat, could also reflect on what we think and say." Have a blessed day!