Luke 1:18-24 New International Version (NIV)
18 Zechariah asked the angel, “How can I be sure of this? I am an old man and my wife is well along in years.”
19 The angel said to him, “I am Gabriel. I stand in the presence of God, and I have been sent to speak to you and to tell you this good news. 20 And now you will be silent and not able to speak until the day this happens, because you did not believe my words, which will come true at their appointed time.”
21 Meanwhile, the people were waiting for Zechariah and wondering why he stayed so long in the temple. 22 When he came out, he could not speak to them. They realized he had seen a vision in the temple, for he kept making signs to them but remained unable to speak.
23 When his time of service was completed, he returned home. 24 After this his wife Elizabeth became pregnant and for five months remained in seclusion.