The spiritual fire that fell at Pentecost not only destroyed sin but also, at times, impenitent sinners. Yes, that's right, unholy sinners in the midst of the Spirit-filled assembly. Annanias and his wife, Sapphira, gave us a lesson for the ages in what not to do in the midst of a Spirit-filled assembly: try to hide sin and lie to spirit-filled leaders! Their experience, like that of Nadab and Abihu, underscores that we who know God must stay self-examined and be prepared to deal with heresy in the church whenever it rears its ugly head. The Spirit's holy fire, which draws so many to Jesus and his lifestyle, repels others who have no intention of becoming true disciples. Paul warned us to reject confirmed heretics for the protection of the church. Jesus, too, warned us to watch out for them and judge them by their spiritual fruit – and issued a most solemn warning to the "Jezebel" that was misleading and harming the church at Thyatira. Do we fear God? That is, give Him the deep, reverent respect He alone deserved.