What does Judges 13:16 mean?
Manoah has asked someone he identifies as a "man of God" (Judges 13:8) to stay long enough for him and his wife to prepare a young goat for him as a meal. This visitor has given them amazing news about their future son (Judges 13:2–15). As this verse shows, both Manoah and his wife assume they are speaking to a man; in fact, this is "the angel of the LORD," almost certainly a temporary manifestation of the Lord God, Himself.Responding to the offer of a meal, "the angel of the LORD" says that even if he stays, He won't eat. He does not say why. A possible explanation involves the circumstances of the visit. Israel is in a pattern of sin and defiance against God (Judges 2:16–19). They are currently suffering under the Philistines for their betrayal (Judges 13:1). As this angelic figure is likely a representation of the Lord, Himself, it may be inappropriate to share a meal—symbolically expressing friendship—with a rebellious people.
Rather than eating a meal, the "angel of the LORD" suggests an alternative: a burnt offering as a sacrifice to God. Manoah still doesn't understand, yet this would be a more appropriate expression of gratitude, in this circumstance.