G5432–φρουρέω–phroureō

In Damascus the governor under Aretas the king guarded the city of the Damascenes desiring to arrest me.

ἐφρούρει ephrourei “was guarding”

But before faith came, we were kept in custody under the law, shut up to the faith which should afterwards be revealed.

ἐφρουρούμεθα ephrouroumetha “we were held in custody”

And the peace of God, which surpasses all understanding, will guard your hearts and your thoughts in Christ Jesus.

φρουρήσει phrourēsei “will guard”

who by the power of God are guarded through faith for a salvation ready to be revealed in the last time.

φρουρουμένους phrouroumenous “[are] being guarded”