1 Corinthians 13:4

The apostle gives us in these verses some of the properties and effects of charity, both to describe and commend it, that we may know whether we have this grace and that if we have not we may fall in love with what is so exceedingly amiable, and not rest till we have obtained it. It is an excellent grace, and has a world of good properties belonging to it. As, I. It is long suffering - makrothumei. It can endure evil, injury, and provocation, without being filled with resentment, indignation, or revenge. It makes the mind firm, gives it power over the angry passions, and furnishes it with a persevering patience, that shall rather wait and wish for the reformation of a brother than fly out in resentment of his conduct. It will put up with many slights and neglects from the person it loves, and wait long to see the kindly effects of such patience on him. II. It is kind - chrēsteuetai. It is benign, bountiful; it is courteous and obliging. The law of kindness is in her lips; her heart is large, and her hand open. She is ready to show favours and to do good. She seeks to be useful; and not only seizes on opportunities of doing good, but searches for them. This is her general character. She is patient under injuries, and apt and inclined to do all the good offices in her power.

— Matthew Henry's Concise Commentary (public domain)

suffereth long--under provocations of evil from others. The negative side of love. is kind--the positive side. Extending good to others. Compare with love's features here those of the "wisdom from above" (Jam 3:17). envieth--The Greek includes also jealousy. vaunteth not--in words, even of gifts which it really possesses; an indirect rebuke of those at Corinth who used the gift of tongues for mere display. not puffed up--with party zeal, as some at Corinth were (Co1 4:6).

— Jamieson-Fausset-Brown Commentary (public domain)