CIC 717 “There was a man sent from God, whose name was John.”1 John was “filled with the Holy Spirit even from his mother’s womb”2 by Christ himself, whom the Virgin Mary had just conceived by the Holy Spirit. Mary’s visitation to Elizabeth thus became a visit from God to his people.3

1 Jn 1:6.
2 Lk 1:15, 41.
3 Cf. Lk 1:68.