The strength of Islam lies on its on its spiritually power. The spiritually is yhe heart of religion. Without it, religious will be meaningless. Indonesians have accepted Islam due to Islams richness of spiritually to solve their complex problems. Indonesians will be Muslims forever if Islam can be the solution for many problems, espesially horizontal conflicts and poverty problems. The source of problems in religious behavior is due to poor spiritually. The 21 century is a revival for religion espesially spiritually which, in turn, generates peace in diversity.