Judges 13:15-16

Then Manoah said to the Angel of the LORD, “Please let us detain You, and we will prepare a young goat for You.” And the Angel of the LORD said to Manoah, “Though you detain Me, I will not eat your food. But if you offer a burnt offering, you must offer it to the LORD.” (For Manoah did not know He was the Angel of the LORD.)