In Matthew 12:35-37 Jesus says, "The good man brings out of his good treasure what is good; and the evil man brings out of his evil treasure what is evil. But I tell you that every careless word that people speak, they shall give an accounting for it in the day of judgment. For by your words you will be justified, and by your words you will be condemned" (NASB).
Our words are an indication of what is inside of us. The fruit of our lips reveals the seeds that have been planted in our minds. What is in your heart is forced out in such a way that you can try if you want to, but you can’t hide what’s inside you. What you say bears witness to who you are.
We will be held accountable for what we say. Beware of idle words, words that are useless and unproductive. Jesus says that for every useless, unproductive, worthless word that we utter, we must give an account. Our words will either reveal that we are right with God, or they will be used to pronounce a sentence of judgment against us. Before we open our mouths to say a word, we first need to make sure that the words that we are speaking are not useless, unproductive and worthless. We should make sure we are not gossiping or assassinating another person’s character.
What we say speaks to who we are. When you see peaches on a tree you conclude that it is a peach tree. If you decided that you wanted oranges instead peaches, you wouldn’t pull all the peaches off and hope that next year the peach tree would produce oranges. You have to tear down the peach tree and plant an orange seed in order for the fruit that the tree bears to be oranges. If you want some different words to come out of your mouth, then you have to plant some different seeds. Change what you read, who you talk to, what you talk about, what you watch on TV, what you see at the movies, what you listen to on the radio or your music player. Don’t just try to change the words that come out of your mouth. You have to uproot the trees that have been planted in your heart and plant some good seeds so that you can produce good fruit.