IS the LORD'S arm too short?
The context is that the people were complaining to Moses and then Moses complains to HaShem.
21 But Moses said, "Here I am among six hundred thousand men on foot, and you
say, 'I will give them meat to eat for a whole month!'
22 Would they have enough if flocks and herds were slaughtered for them? Would
they have enough if all the fish in the sea were caught for them?"
23 The LORD answered Moses, "Is the LORD's arm too short? You will now see
whether or not what I say will come true for you."
The prophet Isaiah answers this question: