In the faith.
They increased in numbers daily.”
Αἱ μὲν οὖν ἐκκλησίαι ἐστερεοῦντο τῇ πίστει καὶ ἐπερίσσευον τῷ ἀριθμῷ καθ’ ἡμέραν.
The author of Acts indicated that thus, the churches or assemblies (Αἱ μὲν οὖν ἐκκλησίαι) were strengthened (ἐστερεοῦντο) in the faith (τῇ πίστει). They increased (καὶ ἐπερίσσευον) in numbers daily (τῷ ἀριθμῷ καθ’ ἡμέραν). Acts was the only Greek biblical writing that used this word ἐστερεοῦντο, that means to make firm, strengthen, confirm, establish, or settle. Once again, there was a summary of all the good things that were happening, as these gentile Christian communities continued to expand. Is your assembly or church expanding?