Because thou believest not ... - This was both a sign and a judgment - a sign that he had come from God, and that the thing would be fulfilled: and a judgment for not giving credit to what he had said. There is no sin in the sight of God more aggravated than unbelief. When God speaks; man should believe; nor can he that "will not" believe escape punishment. God speaks only truth, and we should believe Him. God speaks only what is for our good, and it is right that we should suffer if we do not credit what He says.

Thou shalt be dumb - Σιωπων silent; this translation is literal; the angel immediately explains it, thou shalt not be able to speak. Dumbness ordinarily proceeds from a natural imperfection or debility of the organs of speech; in this case there was no natural weakness or unfitness in those organs; but, for his rash and unbelieving speech, silence is imposed upon him by the Lord, and he shall not be able to break it, till the power that has silenced him gives him again the permission to speak! Let those who are intemperate in the use of their tongues behold here the severity and mercy of the Lord; nine months' silence for one intemperate speech! Many, by giving way to the language of unbelief, have lost the language of praise and thanksgiving for months, if not years!

And behold, thou shalt be dumb, &c. Or "silent; and not able to speak", if he would. Silence is sometimes voluntary; but this was what he could not help;

until the day that these thing shall be performed; which he had said concerning the conception and birth of a son, and the imposition of a name on him; for this dumbness remained upon Zachariah, not only until his wife had conceived, and the child was born, but until the eighth day after, when he was circumcised, and his name was given him the angel directed to: "because thou believest not my words": he was struck both deaf and dumb, as appears from his friends making signs to him, Luke 1:62 which they had no need to have done, could he have heard: he was struck with deafness, because he hearkened not to the angel's words; and with dumbness, because from the unbelief of his heart he objected to them. We learn from hence, what an evil unbelief is, and how much resented by God, and how much it becomes us to take heed, that it prevails not in us: and especially since it easily besets us: "which shall be fulfilled in their season"; first the conception, then the birth; after that the calling him by his name, and in process of time, the doing of his work and office; so that the unbelief Zacharias did not make the faith of God of none effect; for though sometimes the people of God are very unbelieving, yet he abides faithful to his word and promises. Mahomet, in his Alkoran (k), very wrongly makes the angel to say these words to Zacharias,

"thy sign shall be, that thou shalt speak unto no man for three days, otherwise than by gesture.

And elsewhere (l) it is said three nights,

(k) C. 3. p. 40. Ed. Sale. (l) C. 10. p. 249.

Thou shalt be silent (ἔσῃ σιωπῶν)

Lit., thou shalt be being silent. The finite verb and participle denote continuance.

Not able to speak

Showing that the silence would not be voluntary.

My words which (οἵτινες)

The pronoun is qualitative, denoting a class. "My words, which, incredible as they seem to you, are of a kind which shall be fulfilled.

In their season (εἰς τὸν καιρὸν)

The preposition implies exactness: at the completion of the appointed time. The process of fulfilment, beginning now, will go on, εἰς, up to, the appointed time, and at the time will be consummated. Καιρὸν, season, is more specific than χρόνος, time. It is an a appointed, fitting time: the right point of time when circumstances shall concur.

And, behold, thou shalt be dumb, and not able to speak, until the day that these things shall be performed, because thou believest not my words, which shall be fulfilled in their season.

1:20 Thou shalt be dumb. His power of speech taken away shall be a sign.

1:20 Thou shalt be dumb - The Greek word signifies deaf, as well as dumb: and it seems plain, that he was as unable to hear, as he was to speak; for his friends were obliged to make signs to him, that he might understand them, Lu 1:62.

20. dumb-speechless.

not able-deprived of the power of speech (Lu 1:64). He asked a sign, and now he got it.

until the day that these things shall be performed-See on [1534]Lu 1:64.

1:5-25 The father and mother of John the Baptist were sinners as all are, and were justified and saved in the same way as others; but they were eminent for piety and integrity. They had no children, and it could not be expected that Elisabeth should have any in her old age. While Zacharias was burning incense in the temple, the whole multitude of the people were praying without. All the prayers we offer up to God, are acceptable and successful only by Christ's intercession in the temple of God above. We cannot expect an interest therein if we do not pray, and pray with our spirits, and are not earnest in prayer. Nor can we expect that the best of our prayers should gain acceptance, and bring an answer of peace, but through the mediation of Christ, who ever lives, making intercession. The prayers Zacharias often made, received an answer of peace. Prayers of faith are filed in heaven, and are not forgotten. Prayers made when we were young and entering into the world, may be answered when we are old and going out of the world. Mercies are doubly sweet that are given in answer to prayer. Zacharias shall have a son in his old age, who shall be instrumental in the conversion of many souls to God, and preparing them to receive the gospel of Christ. He shall go before Him with courage, zeal, holiness, and a mind dead to earthly interests and pleasures. The disobedient and rebellious would be brought back to the wisdom of their righteous forefathers, or rather, brought to attend to the wisdom of that Just One who was coming among them. Zacharias heard all that the angel said; but his unbelief spake. In striking him dumb, God dealt justly with him, because he had objected against God's word. We may admire the patience of God towards us. God dealt kindly with him, for thus he prevented his speaking any more distrustful, unbelieving words. Thus also God confirmed his faith. If by the rebukes we are under for our sin, we are brought to give the more credit to the word of God, we have no reason to complain. Even real believers are apt to dishonour God by unbelief; and their mouths are stopped in silence and confusion, when otherwise they would have been praising God with joy and gratitude. In God's gracious dealings with us we ought to observe his gracious regards to us. He has looked on us with compassion and favour, and therefore has thus dealt with us.