Matthew 18:18-20 NLT

I've heard verse 20 heaps of times: "For where two or three gather together as my followers,s I am there among them."

But do yourself a favour and read the verses that come before. Puts a bit of a different spin on it. I don't exactly know what it means (more research needed) but I'm pretty sure that most of the times I've heard this verse quoted, it's been used completely out of context.