Judges 13.16 God's angel said to Manoah, "Even if I stay, I won't eat your food. But if you want to prepare a Whole-Burnt-Offering for God, go ahead - offer it!" Manoah had no idea that he was talking to the angel of God.
Judges 11.25 Do you think you're going to come off better than Balak son of Zippor, the king of Moab? Did he get anywhere in opposing Israel? Did he risk war?