A prophet can mean the same thing as a preacher. It can also refer to someone who has insight into the future or predicts future events, which are called prophecies.
Many books in the Old Testament were written by or about prophets and contain their messages for repentance or of predictions for future events. Many of these prophetic predictions anticipated Jesus, though some had a more current focus, while a few looked at the end times.
See the list of prophetic books in the Bible.
Key verse about Prophet: Surely the Sovereign Lord does nothing without revealing his plan to his servants the prophets (Amos 3:7, NIV)
Peter DeHaan writes about biblical Christianity to confront a status quo faith and live a life that matters. He seeks a fresh approach to following Jesus through the lens of Scripture, without the baggage of made-up traditions and meaningless practices.
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