35 The good person out of his good treasure brings forth good, and the evil person out of his evil treasure brings forth evil. ~ Matthew 12:35
This word treasure means to deposit that which is valuable. So, whatever you deposit in your heart, or what you store up in your heart, is the treasure that you will bring forth. Because it is from this treasure that you store up in your heart that your mouth will speak, so, garbage in, garbage out. If you let garbage in, then garbage will come out. But if righteousness, then righteousness will come out.
Remember, the Bible says that the eye is the lamp of the body, and if the eye is the lamp of the body, then it would be super important that you protect what you let in through the eye. Therefore, you cannot watch any old thing or listen to any old thing and expect righteous output. Monitor what you let in, and the output will take care of itself.
Peace. Love. Go Forth and Monitor What You Let In.