Albert Barnes Commentary Judges 18:17

"And the five men that went to spy out the land went up, and came in thither, and took the graven image, and the ephod, and the teraphim, and the molten image: and the priest stood by the entrance of the gate with the six hundred men girt with weapons of war." — Judges 18:17 (ASV)

The five went back to Micah’s chapel (Micah’s house, Judges 18:18) and took the ephod, teraphim, etc., and brought them to the gate where the priest was talking to the 600 men.