καὶ ἡμεῖς μάρτυρες (witnesses) πάντων ὧν ἐποίησεν (he/she/it did) ἔν τε τῇ χώρᾳ (region) τῶν Ἰουδαίων (Judeans) καὶ (ἐν) Ἰερουσαλήμ.

καὶ ἡμεῖς μάρτυρες (witnesses) πάντων

ὧν ἐποίησεν (he/she/it did) ἔν τε τῇ χώρᾳ (region) τῶν Ἰουδαίων (Judeans) καὶ (ejn) Ἰερουσαλήμ.

And we are witnesses of all that he did both in the region of the Jews and in Jerusalem.