A prophet is a religious figure who is supposed to be in communication with a divine being and to speak on its behalf, acting as a bridge between mankind and the supernatural source. Prophets are usually identified by their extraordinary knowledge and power, which some believe they can obtain through prayer or meditation. They may also receive visions from God that guide them in their activities. The Bible describes the office of prophet in many places. For example, the Bible states that the prophets who lived in Israel's past were appointed by their country's kings (see 1 Kings 13:1; 22:19; 2 Kings 14:5). The offices of prophet and priest were often combined in one person (see 1 King 19:20). Today, the term "prophet" is used primarily to refer to those who communicate divine messages directly to human beings. However, some religious groups include among their number those who claim special inspiration for interpreting aspects of human experience not readily explained by science. These people may use such terms as prophet, apostle, or evangelist to describe themselves.