The angel of the Lord; the Son of God, oft so called in the Old Testament, as may be gathered from Judges 13:18, yet distinguished from the Lord, because he appeared here as it were in the form of a servant, as a messenger sent from God, and was really a distinct person from God the Father.
Related Commentaries of Judges 13:3
Judges 13:3
3 And the angel of the LORD appeared unto the woman, and said unto her, Behold now, thou art barren, and bearest not: but thou shalt conceive, and bear a son.