John Chrysostom
The expressions better and greater signify not opposition, but superiority.
From this it is also clear that he does not censure the gift, but guides his hearers toward what is better. He shows both his care for them and his soul, which is free from every envy.
He did not say, two or three. Rather, he said, "I desire that you all speak with tongues." And he desires not only this, but also that they prophesy. He desires the latter more than the former, "for he who prophesies is greater."
After he has explained and proved the matter, he declares his desire. Yet he does not do so simply, but adds, "unless he also interprets."
If he is capable of this too, that is, of interpretation, then, he says, he becomes equal to the prophet. For then many receive benefit. One must especially observe how in everything he seeks this benefit before all else.