And, behold, you shall be dumb, and not able to speak, until the day that these things shall be performed, because you believe not my words, which shall be fulfilled in their time.
All Commentaries on Luke 1:20 Go To Luke 1
George Leo Haydock
AD 1849
On account of the many signs the angel had given, that what he said was true, the unbelief of Zacharias seemed inexcusable; for the angel appeared in a holy place, in the temple, and during divine service: he, moreover, foretold what related to the redemption of all the people, and to the glory of God; from all which circumstances, Zacharias ought to have concluded, that it was a good angel, and that what he said would eventually come to pass. (Nicholas of Lyra)
Shalt be dumb He seems to have been both dumb and deaf by the Greek text, and by what we may learn from ver. 62; where we find, that those who were present did not speak, but rather made signs to him. (Witham)