So many Christians, particularly in Pentecostal circles, are looking towards revival. We know from scripture and historical evidence over the many intervening centuries, that since the baptism of the Holy Spirit at Pentecost, there have been a number of major revival occasions. All those who experience revival have been willing to prepare their hearts before the Lord and be obedient to the Holy Spirit's directions. These revivals were all based on revelation knowledge of an absolute need to do God's will and purposes instead of their own desires.