What do we learn from "Ki Chisah Fanav b'Chelbo"?
Malbim: Even though his mouth is covered by his abundant fat, still Hashem will crush him.
What is the meaning of "va'Ya'as Pimah Alei Chasel"?
Rashi: He made a mouth on the loins - the fat is doubled over his flanks, and appears like a mouth. Pimah is like "v'Haysah ha'Petzirah Fim" - a smith's file with many mouths.
Ibn Ezra: His Chelev covered his mouth. It is as if he needed to make a mouth on the flank to remove the Chelev. This is a metaphor - at first the Rasha gets rich, and in the end it is opposite - "bi'Fro'ach Resha'im Kemo Esev..."
Malbim: Via crushing his back, his flesh and fat are opened. A 'mouth' is formed; it speaks, and tells the Rasha's intent. The parable is, even though he seems fat, via war against Hashem he will be crushed with constant fear. His thoughts are recognized! His flanks are full of shame and fear, He does not succeed - he is full of affliction and hardship.
