What is the context of Job 28:17-18?

• Wisdom is of Greater Value than Precious Stones (Job 28:12-19 true)
• The Search for Wisdom Is Harder (Job 28:12-28 true)
• Job’s Discourse on Wisdom (Job 28:1-28 true)
• Interlude: Where Wisdom Is Found (Job 28:1-28 true)
• Job’s Hymn to Wisdom (Job 28:1-28 true)
• Job Continues: Where Is Wisdom? (Job 28:1-28 true)
• Job Speaks of Wisdom and Understanding (Job 28:1-28 true)