The previous chapter dealt in the internal sense with a third temptation - a stage when good was lacking. The present chapter deals in the internal sense with the stage that came after the people had been given that good - a fourth temptation, in which truth was lacking. This temptation is meant by the grumbling of the children of Israel because they had no water; so they were given the truth of faith by the Lord, which is meant by the water from the rock of Horeb.