The rabble identified in these verses were non-Israelite riff-raff that had followed the Hebrews out of Egypt. These foreigners had no personal knowledge or attachment to God…or His promises, they were just along for the ride and whatever they could get out of it. But even though the Jews held no high regard for them, they still allowed the rabble’s discontent to influence them. The Israelites began grumbling too…totally forgetting how and why God had brought them out of Egypt in the first place. We as Christians need to be very careful in listening to the world’s rabble…for if we don’t, we’ll start complaining just as loudly and be just as discontent…forgetting everything about God.