G0669–ἀποφθέγγομαι–apophthengomai

And they were all filled with the Holy Spirit, and began to speak in other languages, as the Spirit gave them utterance.

ἀποφθέγγεσθαι apophthengesthai “to utter forth”

But Peter standing up with the eleven, lifted up his voice, and said to them, Ye men of Judea, and all ye that dwell at Jerusalem, be this known to you, and hearken to my words:

ἀπεφθέγξατο apephthegxato “spoke forth”

But he said, I am not insane, most noble Festus; but speak forth the words of truth and soberness.

ἀποφθέγγομαι. apophthengomai “I utter.”