The phrase "What would Jesus do?", often abbreviated to WWJD, became particularly popular in the United States in the early 1900s, following the 1896 novel In His Steps: What Would Jesus Do? by Charles Sheldon. The phrase saw a resurgence in the 1990s as a personal motto for Christians, who used it as a reminder of their belief in the moral imperative in a way that demonstrated the love of Jesus through their actions. The resurgence of the motto in the 1990s stemmed from the WWJD abbreviation on wristbands that became popular among Christian youth groups.