In Matthew 12:31-37, the pharisees had spoken against the Holy Ghost and Jesus was going to address the issue. He said every blasphemy spoken against Him would be forgiven. But any word spoken the Holy Ghost wouldn’t, in this world and the next. He turned to the pharisees and said, you generation of vipers, how can you speak truth being evil. A good man out of the good treasure of their heart brings forth good things. For out of the abundance of the heart the mouth speaks. Every idle word that man shall speak, they will give an account in the day of judgement. Jesus said, by your words you will be justified or condemned.