G1620–ἐκτίθημι–ektithēmi

And when he was put out, Pharaoh's daughter took him and kept him as her son.

ἐκτεθέντος ektethentos “When was being exposed”

But Peter gave them an account of it all in order, saying to them,

ἐξετίθετο exetitheto “he was explaining [it]”

And he was preaching in the Synagogue without fear. But Priscilla and Aquila, hearing his words, took him in, and gave him fuller teaching about the way of God.

ἐξέθεντο exethento “they expounded”

And when a day had been fixed, they came to his house in great numbers; and he gave them teaching, giving witness to the kingdom of God, and having discussions with them about Jesus, from the law of Moses and from the prophets, from morning till evening.

ἐξετίθετο exetitheto “he was expounding”