Job 42 and Job's reply — a hand over the mouth, and an ending that restores without ever answering the question that was asked.
God answers Job out of the whirlwind with questions rather than explanations: where were you when I laid the earth's foundation?
Job 13 and 'though he slay me, yet will I trust him' — preached with open reluctance, knowing people in the room were in deep seasons of suffering.
Job 2 and 'skin for skin' — the structural theology in the book that gets missed when the whole conversation is about why.
Job 1:13-22. Four messengers in a row, each arriving before the last has finished. The preacher argues the book is really about God's sovereignty, not only about why people suffer.
Job 1 opens a six-week series, with the wager in the heavenly court laid out plainly — and the gospel already visible in a book about suffering.