1 Corinthians 14:16

16Otherwiseἐπεὶifἐὰνyou blessεὐλογῇςspiritπνεύματι,the [one]ὁfillingἀναπληρῶνtheτὸνplaceτόπονof theτοῦuninstructedἰδιώτουhowπῶςwill he sayἐρεῖtheτὸAmenἈμήνatἐπὶτῇyourσῇthanksgivingεὐχαριστίᾳ;sinceἐπειδὴwhatτίyou sayλέγειςnotοὐκhe knowsοἶδεν·

Otherwise, if you bless with the spirit, how will the one filling up the place of the uninstructed say the “Amen” to your thanksgiving, since he does not know what you say?