Luke 1:18-20

1:18 Zechariah said to the angel, “How can I be sure of this? For I am an old man, and my wife is old as well.” 1:19 The angel answered him, “I am Gabriel, who stands in the presence of God, and I was sent to speak to you and to bring you this good news. 1:20 And now, because you did not believe my words, which will be fulfilled in their time, you will be silent, unable to speak, until the day these things take place.”

Luke 1:34-35

1:34 Mary said to the angel, “How will this be, since I have not had sexual relations with a man?” 1:35 The angel replied, “The Holy Spirit will come upon you, and the power of the Most High will overshadow you. Therefore the child to be born will be holy; he will be called the Son of God.