The Hebrew term nābîʾ refers to those who prophesy, i.e., speak messages from a deity. Those with this designation can speak for Yahweh (e.g., 1 Kgs 18:22; 22:7; 2 Chr 28:9),
Prophets of Yahweh often receive direct revelation from God himself through various means (e.g., Zech 1:1), and they convey this revelation to their audience.