G5350–φθέγγομαι–phthengomai

They called them, and charged them not to speak at all nor teach in the name of Jesus.

φθέγγεσθαι phthengesthai “to speak”

but he was rebuked for his own disobedience. A mute donkey spoke with man's voice and stopped the madness of the prophet.

φθεγξάμενον phthegxamenon “having spoken”

For, uttering great swelling words of emptiness, they entice in the lusts of the flesh, by licentiousness, those who are indeed escaping from those who live in error;

φθεγγόμενοι phthengomenoi “speaking words”