Parallel
Acts 12:5
Nestle 1904 Greek New Testament · Berean Standard Bible
Ὁ μὲν οὖν Πέτρος ἐτηρεῖτο ἐν τῇ φυλακῇ προσευχὴ δὲ ἦν ἐκτενῶς γινομένη ὑπὸ τῆς ἐκκλησίας πρὸς τὸν Θεὸν περὶ αὐτοῦ
So Peter was kept in prison, but the church was fervently praying to God for him.