Job 13:12
Your remembrances are like unto ashes, your bodies to bodies of clay.
Cross-reference
Job 33:6
Parallel
In Job 33:6, Elihu says he was 'pinched off from a piece of clay' — the same human frailty imagery Job applies to his friends' arguments.
Job 18:17
Parallel
Job 18:17 describes the wicked's memory perishing—similar to the worthless, fleeting nature of friends' 'proverbs of ashes'.
Genesis 18:27
Allusion
In Genesis 18:27, Abraham calls himself 'dust and ashes' — the same imagery Job uses for his friends' fragile defenses.
Genesis 2:7
Related theme
Genesis 2:7 shows man formed from dust — the same earthy material Job uses to describe his friends' arguments as weak and mortal.