G0669–ἀποφθέγγομαι–apophthengomai

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

ἀποφθέγγεσθαι apophthengesthai “to utter forth”

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

ἀπεφθέγξατο apephthegxato “spoke forth”

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

ἀποφθέγγομαι. apophthengomai “I utter.”