William Burkitt on 1 Corinthians 13:4

Here the apostle enters upon the description and commendation of the grace and duty of charity, and declares several excellent effects and properties of it; namely, It suffereth long, and is kind; that is, the charitable man is kind to all, patient towards all; he can bear injuries and reproaches very long, without either desiring or endeavouring to revenge them.

It envieth not; that is, he envieth neither the power, nor profit, nor preferment, nor applause, nor precedency, of any man; but is well pleased with the happiness of every man, and laments their misfortunes.

Charity vaunteth not itself, is not puffed up; that is, it suppresses all self-applauding and admiring thoughts, all arrogancy in assuming to ourselves, and undervaluing of others.