All biblical Christians oppose Gay Pride Month, but some partly on the grounds that all pride is a sin. This view is possible only because of equivocation around the word “pride.” Pride in the Bible is roughly equivalent to haughtiness (Prov. 16:18): thinking oneself superior to others due to his own birth, heritage, talent, goodness, merit, and so forth, all marinated in self-sufficiency. This form of pride is sinful, and God hates it (Prov. 8:13).
But pride can also refer to a sense of satisfaction in accomplishing something creditable or belonging to a group of which one thinks highly. For instance, when we take satisfaction in the rewards for our hard work, or in the church we attend, or in our child’s graduation, there’s no evidence the Bible would identify this attitude as sin. It’s a legitimate kind of pride.