Christians in revival are accordingly found living in God's presence (Coram Deo), attending to His Word, feeling acute concern about sin and righteousness, rejoicing in the assurance of Christ's love and their own salvation, spontaneously constant in worship, and tirelessly active in witness and service, fueling these activities by praise and prayer.
Source: Marks of Revival, Revival Commentary, v. 1, n. 1.
Revival is the visitation of God which brings to life Christians who have been sleeping and restores a deep sense of God's near presence and holiness. Thence springs a vivid sense of sin and a profound exercise of heart in repentance, praise, and love, with an evangelistic outflow.
Source: Your Father Loves You, Shaw Publishing, 1986, Page for May 30.