For four decades Moses led the people as they wandered in the dessert. Once when they were thirsty, God told Moses to hit a certain rock with his walking stick. He did and water gushed out.
Later on, the people again clamored for water. This time God told Moses to speak to a rock, but Moses hit it instead. Though the people still got their water, Moses earned a reprimand for his actions.
We don’t know for sure why Moses disobeyed God and hit the rock the second time, but it might be because hitting a rock worked once, so he did it again. He placed experience over God’s word. Though this worked out for the people, it didn’t work out so well for Moses.
Moses’ example reminds us that it’s important to carefully listen to what God says and then to precisely obey him.