An evangelist is a person who actively promotes and spreads a particular belief or message, often related to religion. In Christianity, evangelists are individuals who share the teachings of Jesus Christ and seek to convert others to the faith. They may preach in churches, conduct outreach programs, or use media to reach a wider audience. In a broader context, the term can also refer to someone who passionately advocates for a cause, product, or idea. For example, a technology evangelist promotes new innovations and encourages others to adopt them, similar to how Steve Jobs championed Apple products.