Luke 1:20-22

20 But you have not believed my message, which will come true at the right time. Because you have not believed, you will be unable to speak; you will remain silent until the day my promise to you comes true."

21 In the meantime the people were waiting for Zechariah and wondering why he was spending such a long time in the Temple.

22 When he came out, he could not speak to them, and so they knew that he had seen a vision in the Temple. Unable to say a word, he made signs to them with his hands.