dumb: Σιωπων [Strong's G4623], silent; for in this case, though there was no natural imperfection or debility of the organs of speech, as in dumbness, yet, thou shalt not be able to speak. This was at once a proof of the severity and mercy of God. Of severity, in condemning him to nine months' silence for his unbelief; of mercy, in rendering his punishment temporary, and the means of making others rejoice in the events predicted.
because: Luk 1:45; Gen 18:10-15; Num 20:12; 2Ki 7:2, 2Ki 7:19; Isa 7:9; Mar 9:19, Mar 16:14; Rev 3:19