John Gill Commentary Job 6:12

"Is my strength the strength of stones? Or is my flesh of brass?" — Job 6:12 (ASV)

[Is] my strength the strength of stones ?
&c.] Is it like such especially which are foundation and corner stones that support a building? or like a stone pillar, that will bear a prodigious weight? no, it is not:

or [is] my flesh of brass ?
is it made of brass? or is it like to brass for hardness, or for sustaining any weight laid on it? it is not; and, therefore, it cannot bear up under the ponderous load of afflictions on it, but must sink and fail; it is but flesh and blood, and that flesh like grass, weak and feeble; and, therefore, death is better than life laden with such an insupportable burden.