Exodus 17:2-4

17:2 So the people contended with Moses, and they said, “Give us water to drink!” Moses said to them, “Why do you contend with me? Why do you test the Lord?” 17:3 But the people were very thirsty there for water, and they murmured against Moses and said, “Why in the world did you bring us up out of Egypt – to kill us and our children and our cattle with thirst?”

17:4 Then Moses cried out to the Lord, “What will I do with this people? – a little more and they will stone me!”