Luke 1:20-22

But now, since you did not believe my words, you will be stricken silent and unable to speak until the day my words have been fulfilled at their appointed time and a child is born to you. That will be your sign!” Meanwhile, the crowds outside kept expecting him to come out. They were amazed over Zechariah’s delay, wondering what could have happened inside the sanctuary. When he finally did come out, he tried to talk, but he couldn’t speak a word, and they realized from his gestures that he had seen a vision while in the Holy Place.