Job 28:15 Midrash

לֹא־יֻתַּ֣ן סְג֣וֹר תַּחְתֶּ֑יהָ וְלֹ֥א יִ֝שָּׁקֵ֗ל כֶּ֣סֶף מְחִירָֽהּ׃

It cannot be gotten for gold, Neither shall silver be weighed for the price thereof.

Read midrashic interpretation of Job 28:15: and classical rabbinic exegesis.