Matthew 12:33-37
"Either make the tree good and its fruit good, or else make the tree bad and its fruit bad; for a tree is known by its fruit. Brood of vipers! How can you, being evil, speak good things? For out of the abundance of the heart the mouth speaks. A good man out of the good treasure of his heart brings forth good things, and every evil man out of the the evil treasure brings forth evil things. But I say to you that for every idle word men may speak, they will give account of it in the day of judgement. For by your words you will be justified, and by your words you will be condemned."
I believe that Jesus loves what is good, and hates what is evil. We all have choices about the words that come out of our mouths. "for every idle word" (I think that means every careless, unkind word) Jesus hears every word. Because I want relationship with Jesus, I do pray that my words are truthful and kind. I pray that the Holy Spirit gaurds my heart and that my heart receives good treasures.