Job 13:12 in the World English Bible
Your memorable sayings are proverbs of ashes. Your defenses are defenses of clay.
Context
11 Shall not his excellency make you afraid? and his dread fall upon you?
12 Your remembrances are like unto ashes, your bodies to bodies of clay.
13 Hold your peace, let me alone, that I may speak, and let come on me what will.