Read Exodus 17:1-7.

Read verse 5. What was Moses to take with him? Why do you suppose God gave this instruction?

Read verse 6. What did God say would happen when Moses hit the rock? What caused water to come out of the rock? Was this an ordinary rock?

Let me introduce you to the idea that there is no such thing as an ordinary rock. Yes, I know they're all different colors and formed from different types of sediment and such. But I'm talking about something different here. I recently studied rocks and rock imagery in the Bible for an article I wrote and it changed my whole concept of rocks. I'll share a bit of that on Sunday.

To find out a bit more about this, read 1 Corinthians 10:1-13. There is a very good reason this passage fits so well with Exodus 17 and it's not just historical. The spiritual truth from Exodus 17 is expanded in 1 Corinthians 10.

If you had to identify the central truth from both passages, what would it be?