Jamieson, Fausset & Brown, on Luke 1:64

“And immediately his mouth was opened, and his tongue loosed, and he spoke, blessing God.”

“mouth opened immediately--on thus palpably showing his full faith in the vision, for disbelieving which he had been struck dumb (Luk 1:13, Luk 1:20).”

Imported from an open dataset — not yet checked against the printed edition.