The angel of Yahweh said to Manoah, Though you detain me, I won't eat of your bread; and if you will make ready a burnt offering, you must offer it to Yahweh. For Manoah didn't know that he was the angel of Yahweh.
God’s messenger repeated the instructions for the benefit of Samson’s father (8-14), who then prepared to offer a sacrifice to God (15-16). When the messenger ascended towards heaven in the flames of the altar, Samson’s parents realized that he was a supernatural figure, the angel of the Lord (17-23; see note on Joshua 5:13-15).