Parallel
1 Peter 3:19
Nestle 1904 Greek New Testament · Berean Standard Bible
ἐν ᾧ καὶ τοῖς ἐν φυλακῇ πνεύμασιν πορευθεὶς ἐκήρυξεν
in whom (note: Or in the spirit, 19in which) He also went and preached to the spirits in prison