ITSUB is a Ku Klux Klan acronym for "In The Sacred Unfailing Being," a reference to God. It is one of many Klan acronyms created by the Second Ku Klux Klan that emerged in 1915. That Klan did not survive, but subsequent Ku Klux Klan groups continued many of its rituals and codes. Today, ITSUB has no real meaning or particular purpose and is typically used by Klan group members in on-line messages or posts solely as a way to identify themselves with the Ku Klux Klan. This has been the fate of a number of similar ancient Klan acronyms.