A.T. Robertson Commentary 1 Corinthians 14:5

"Now I would have you all speak with tongues, but rather that ye should prophesy: and greater is he that prophesieth than he that speaketh with tongues, except he interpret, that the church may receive edifying." — 1 Corinthians 14:5 (ASV)

Except he interpret (εκτος ε μη διερμηνευη). Pleonastic combination of εκτος (preposition except) and ε μη (if not, unless) as in 15:2; 1 Timothy 5:19. For use of ε with subjunctive rather than εαν see Php 3:12 (common enough in the Koine, Robertson, Grammar, pp. 1017f., condition of third class). On the verb see on 12:30; Luke 24:27; Acts 9:36.

Receive (λαβη). Second aorist (ingressive) active subjunctive of λαμβανω, may get edification.