In Zephaniah 1:12, what will God search Jerusalem with to punish the complacent?

Answer: Lamps

God will search Jerusalem with lamps (KJV: candles) and punish those who say, "The LORD will do nothing, either good or bad."

“And at that time I will search Jerusalem with lamps and punish the men settled in complacency, who say to themselves, ‘The LORD will do nothing, either good or bad.’”— Zephaniah 1:12 (BSB)