Scriptural support for trusting Scripture over private revelation

Several sects place a high premium on personal spiritual experience and/or personal revelation as a means for discovering Truth. For example: angelic visitations, miracles, dreams, visions, LDS's "burning in the bosom". Others (likely *Sola Scriptura* believers in particular) would say that these experiences can be demonic in origin and are not trustworthy. In particular, they might argue that common beliefs of such sects are untrue and dangerous because they contradict Scripture (e.g. a Christian confronted by an alleged supernatural experience of a Muslim would likely assert said experience to be demonic in nature on the basis of Scripture contradicting the Qur'an). **What *Scripture passages* exist (if any) in support of the idea that "spiritual" experiences can be misleading?** Relatedly, which verses speak to the necessity of reading Scripture rather than relying entirely on spiritual experiences and/or private revelation?