Luke 1:18-20

18And Zacharias said unto the angel, Whereby shall I know this? for I am an old man, and my wife well stricken in years. 19And the angel answering said unto him, I am Gabriel, that stand in the presence of God; and I was sent to speak unto thee, and to bring thee these good tidings. 20And behold, thou shalt be silent and not able to speak, until the day that these things shall come to pass, because thou believedst not my words, which shall be fulfilled in their season.