A good definition of 'Revival'

Revival is a sovereign work of God the Father, consisting of a powerful intensification by Jesus of the Holy Spirit’s normal activity of testifying to the Savior, accentuating the doctrines of grace, and convicting, converting, regenerating, sanctifying and empowering large numbers of people at the same time, and is therefore a community experience.It is occasionally preceded by an expectation that God is about to do something exceptional; it is usually preceded by an extraordinary unity and prayerfulness among Christians; and it is always accompanied by the revitalization of the church, the conversion of large numbers of unbelievers and the diminution of sinful practices in the community.