NOTES for Jdg 13:2-7
Today we read the story of Samson's birth. In the Bible there is more than one situation in which God chooses a barren woman so that she becomes the mother of the one He has chosen for special service. Later, speaking with the Blessed Virgin Mary, the archangel Gabriel will give as an example Saint Elizabeth, who conceived John the Baptist although she was old and barren.
For a person at that time, the birth of a child to a barren woman was a miracle not much smaller than birth from a virgin, since barrenness was perceived as a verdict. God intervenes in the situation. He cancels this "verdict." And it is important to Him to demonstrate openly that the birth of this particular person was needed by Him, that this person was chosen in a special way, and therefore a miracle is connected with his birth. And the miracles connected with the birth of His servants prepare people at least a little for the main miracle, the birth of the Son of God.