Matthew 12:34...”You brood of vipers, how can you who are evil say anything good? For the mouth speaks what the heart is full of.”
“No weapon that is formed against me shall prosper (succeed); and every tongue that shall rise against me in judgment I shalt condemn. This is the heritage of the servants of the LORD, and their righteousness is of Me, saith the LORD.” (Isaiah 54:17)
Look up “Your own words condemn you”