Gale's Finest Hour
Context below, moderate Baldur's Gate III spoilers incoming-
Our party met this guy Gale at the start of the game, but he annoyed us from his constant chatter so we killed him and stole all his belongings. His ghost then appeared and said that if he wasn't revived in a few days, the world would end. We brushed him off and went on our way.
Three days later, the world ends.
We load a save of shortly before that happens and go and revive Gale. He CONTINUES to yap and yap with no idea he missed 2 days, then does this.