וַיִּגְזֹ֤ר עַל־יָמִין֙ וְרָעֵ֔ב וַיֹּ֥אכַל עַל־שְׂמֹ֖אול וְלֹ֣א שָׂבֵ֑עוּ אִ֥ישׁ בְּשַׂר־זְרֹע֖וֹ יֹאכֵֽלוּ׃
And one snatcheth on the right hand, and is hungry; and he eateth on the left hand, and is not satisfied; they eat every man the flesh of his own arm:
Read kabbalistic (mystical) interpretation of Isaiah 9:19: and classical mystical sources.