“And fire came out from before the LORD and consumed the burnt offering and the pieces of fat on the altar, and when all the people saw it, they shouted and fell on their faces” (v24). The rituals that the priests went through weren’t just a religious show; the goal was to be in God’s presence. God Himself instructed them in how to sacrifice and worship, and when the people obeyed with sincere hearts, God responded by sending holy fire.
“The glory of the Lord appeared to all the people” (v23). God’s glory, His special presence, didn’t appear in a secret place with the priests; He delighted to make Himself known to all the people.