Besides prayer, there are other ways in which Pentecostals believe healing can be received. One way is based on Mark 16:17–18 and involves believers laying hands on the sick. This is done in imitation of Jesus who often healed in this manner. Another method that is found in some Pentecostal churches is based on the account in Acts 19:11–12 where people were healed when given handkerchiefs or aprons worn by the Apostle Paul. This practice is described by Duffield and Van Cleave in "Foundations of Pentecostal Theology":