Altered states of consciousness comprise unusual conditions of perception achieved by the deliberate cultivation of often abnormal mental states. This practice continues to increase in popularity today. The most recent pop culture example of this teaching is found in Eckhart Tolle's writing. His teachings and books were featured as part of Oprah's popular talk show, resulting in study groups of his teachings across America and beyond. The authors share the major problems and potential dangers that are involved, as well as give a biblical evaluation of this practice.
