Parallel
Acts 22:15
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
Ὅτι ἔσῃ μάρτυς αὐτῷ πρὸς πάντας ἀνθρώπους ὧν ἑώρακας καὶ ἤκουσας.
You will be His witness to everyone of what you have seen and heard.