The Nativity of the Holy Forerunner and Baptist of the Lord, John: The Gospel (Luke. 1: 5) relates that the righteous parents of St John the Baptist, the Priest Zachariah and Elizabeth (September 5), lived in the ancient city of Hebron. They reached old age without having children, since Elizabeth was barren. Once, St Zachariah was serving in the Temple at Jerusalem and saw the Archangel Gabriel, standing on the right side of the altar of incense. He predicted that St Zachariah would father a son, who would announce the Savior, the Messiah, awaited by the Old Testament Church. Zachariah was troubled, and fear fell upon him. He had doubts that in old age it was possible to have a son, and he asked for a sign. It was given to him, and it was also a chastisement for his unbelief. Zachariah was struck speechless until the time of the fulfillment of the archangel's words. St Elizabeth came to be with child, and fearing derision at being pregnant so late in life, she kept it secret for five months. Then her relative, the Virgin Mary, came to share with her Her own joy. Elizabeth, "filled with the Holy Spirit," was the first to greet the Virgin Mary as the Mother of God. St John leaped in his mother's womb at the visit of the Most Holy Virgin Mary and the Son of God incarnate within Her.

Source: Church Calender