1 Corinthians 14:4-5

14:4 The one who speaks in a tongue builds himself up, ¹  but the one who prophesies builds up the church. 14:5 I wish you all spoke in tongues, but even more that you would prophesy. The one who prophesies is greater than the one who speaks in tongues, unless he interprets so that the church may be strengthened.

[14:4]  ¹ sn The Greek term builds (himself) up does not necessarily bear positive connotations in this context.