John Gill's Bible Commentary Ver. 5. For, lo, thou shalt conceive and bear a son , etc.] Which is not only repeated for the confirmation of it, but that she might take notice that he was to be a Nazarite, and therefore must conform to everything agreeable to the law of the Nazarites, and take care that it was observed in him: and no razor shall come on his head ; to cut off the hair of it, not from the time of his birth to his death; for he was to be a perpetual Nazarite: other Nazarites during the time of their Nazariteship were not to suffer a razor to come upon them, but afterwards might; but for such an one as Samson, it was not lawful ever to suffer his hair to be cut off; (see Numbers 6:5) for the child shall be a Nazarite unto God from the womb ; in which he was a type of Christ, who was sanctified by the Lord, separated from sinners, and called a “Nazarene”: was born of a virgin, as Samson was of a barren woman, and his birth foretold by an angel as this: and he shall begin to deliver Israel out of the hand of the Philistines ; for the salvation he wrought for Israel was not complete and perfect; it was only begun by him, and carried on in the times of Eli, Samuel, and Saul, and perfected by David. In this his antitype exceeds him, who is the author of the complete salvation of his people out of the hands of all their enemies, sin, Satan, and the world; though in this there is a great resemblance between Samson and our Lord Jesus, in that what he did he did himself alone; not at the head of an army, and with forces under him, as other judges; so Christ with his own arm, and of himself, and without others, wrought salvation for his people; (see Isaiah 63:5).
Matthew Henry Commentary
Verses 1-7 - Israel did evil: then God delivered them again into the hands of the Philistines. When Israel was in this distress, Samson was born. Hi parents had been long childless. Many eminent persons were born of suc mothers. Mercies long waited for, often prove signal mercies; and by them others may be encouraged to continue their hope in God's mercy The angel notices her affliction. God often sends comfort to his people very seasonably, when they feel their troubles most. This deliverer of Israel must be devoted to God. Manoah's wife was satisfied that the messenger was of God. She gave her husband a particular account, bot of the promise and of the precept. Husbands and wives
should tell eac other their experiences of 
