Rom 12:15. Χαίρειν, rejoice) the infinitive for the imperative, a thing not unfrequent among the Greeks, and here a gentle mode of expression [moratus, indicative of ἦθος, a feeling, viz. here the avoidance of the authoritative Imperative]. I exhort is understood, taken from Rom 12:1. Laughter is properly opposed to weeping, but in this passage as in 1Co 7:30, joy is used, not laughter, which is less suitable to Christians in the world.