God breaks his 400 years of silence with two angelic visits -one to Zechariah and one to Mary-, two miraculous pregnancies -the barren womb of Elizabeth and the virgin womb of Mary-, two promised births -John the Baptist and Jesus the Christ-, and one song of praise -the Magnificat- that will eventually culminate in the song of praise found in Revelation 7 with all the saints from every nation, tongue, and tribe.