1 Corinthians 13:5

5.Doth not behave itself unseemly Erasmus renders it “Is not disdainful;” but as he quotes no author in support of this interpretation, I have preferred to retain its proper and usual signification. I explain it, however, in this way — that love does not exult in a foolish ostentation, or does not bluster, but observes moderation and propriety. And in this manner, he again reproves the Corinthians indirectly, because they shamefully set at naught all propriety by an unseemly haughtiness. (786)

Seeketh not its own. From this we may infer, how very far we are from having love implanted in us by nature; for we are naturally prone to have love and care for ourselves, and aim at our own advantage. Nay, to speak more correctly, we rush headlong into it. (787) For so perverse an inclination the remedy (788) is love, which leads us to leave off caring for ourselves, and feel concerned for our neighbors, so as to love them and be concerned for their welfare. Farther, to seek one’s own things, (789) is to be devoted to self, and to be wholly taken up with concern for one’s own advantage. This definition solves the question, whether it is lawful for a Christian to be concerned for his own advantage? for Paul does not here reprove every kind of care or concern for ourselves, but the excess of it, which proceeds from an immoderate and blind attachment to ourselves. Now the excess lies in this — if we think of ourselves so as to neglect others, or if the desire of our own advantage calls us off from that concern, which God commands us to have as to our neighbors. (790) He adds, that love is also a bridle to repress quarrels, and this follows from the first two statements. For where there is gentleness and forbearance, persons in that case do not, on a sudden, become angry, and are not easily stirred up to disputes and contests. (791)