Book of Numbers
Moses and the Israelites set for Moab, on the eastern border of Canaan (an earlier name for the promised land). The Israelites become thirsty and blame Moses for lack of water. God tells Moses to talk to a rock to bring out water. Moses hits the rock with his staff instead. For this wrong act, God tells Moses he can never enter the promised land. God punishes the people by preventing them from entering the promised land. They try to find another way. Aaron dies. The Israelites curse at God. They are then attacked by nasty fiery flying serpents. God tells Moses to make a brass serpent (the Nehushtan) and put it on a pole. Whoever looks at that brass serpent is cured of the bite of the serpents.