What is the Unpardonable Sin?

This morning I want to deal with a passage that I think is one of the most difficult and troubling passages in all the recorded teachings of Jesus. It's the passage in Matthew 12 where our Lord speaks of the unpardonable sin. Every time we do a Q&A, someone will ask about the unpardonable sin. What is it?; how do you know if someone has committed it? Is it something that can be done unintentionally? and other questions.

In a Q&A session, there's never enough time to cover the subject in depth, so beginning today, I want to take three sessions to look at what Jesus meant when He spoke in Matthew 12 about the one sin that "will not be forgiven, either in this age or in the age to come" (v. 32)...