Parallel
1 Corinthians 14:16
Nestle 1904 Greek New Testament · Berean Standard Bible
ἐπεὶ ἐὰν εὐλογῇς ἐν πνεύματι ὁ ἀναπληρῶν τὸν τόπον τοῦ ἰδιώτου πῶς ἐρεῖ τὸ Ἀμήν ἐπὶ τῇ σῇ εὐχαριστίᾳ ἐπειδὴ τί λέγεις οὐκ οἶδεν
Otherwise, if you speak a blessing in spirit (note: Or in the Spirit), how can someone who is uninstructed say “Amen” to your thanksgiving, since he does not know what you are saying?