Mark 16:17
“These signs will accompany those who believe: in my name they will cast out demons; they will speak with new languages;”
What does Mark 16:17 mean?
Jesus is describing what the life of faith will look like for his followers. He's saying that belief in him isn't just an internal conviction, but something that produces real, visible effects in the world: casting out demons and speaking in new languages are two examples of the kinds of things God's power will enable them to do. For people hearing this after Jesus rose from the dead, these weren't abstract promises but concrete reassurances that the Holy Spirit would work through them in tangible ways. If you're wondering whether faith should produce real change, Jesus seems to say yes, it should show up in our actions and our ability to help others.