A.T. Robertson Commentary 1 Corinthians 14:24

"But if all prophesy, and there come in one unbelieving or unlearned, he is reproved by all, he is judged by all;" — 1 Corinthians 14:24 (ASV)

He is reproved by all (ελεγχετα υπο παντων). Old word for strong proof, is undergoing conviction.

Is judged (ανακρινετα). Is tested. Cf. 1 Corinthians 2:15; 4:3f.