Albert Barnes Commentary Job 41:12

"I will not keep silence concerning his limbs, Nor his mighty strength, nor his goodly frame." — Job 41:12 (ASV)

I will not conceal his parts – This is the beginning of a more particular description of the animal than had been given before. In the previous part of the chapter, the remarks are general, speaking of it merely as one of great power and not to be captured by any of the ordinary methods. A description follows of the various parts of the animal, all tending to confirm this general impression and to fill the hearer with a deep conviction of his formidable character.

The words translated “I will not conceal” mean “I will not be silent;” that is, he would speak of them. The description that follows of the “parts” of the animal refers particularly to his mouth, his teeth, his scales, his eyelids, his nostrils, his neck, and his heart.

Nor his comely proportion – The crocodile is not an object of beauty, and the animal described here is not spoken of as one of beauty, but as one of great power and fierceness. The phrase used here (ערכוּ חין chı̂yn ‛êrekô) properly means “the grace of his armature,” or “the beauty of his armor.” It does not refer to the beauty of the animal as such, but to the armor or defense that it had.

Though there might be no beauty in an animal like the one described here, yet there might be a “grace” or fitness in his means of defense that could not fail to attract admiration. This is the idea in the passage. So Gesenius, Umbreit, and Noyes render it.