Role at the royal court
Nathan is presented in the biblical text as a prophet attached to the royal court rather than an itinerant figure. He first appears as an advisor consulted by David (2 Samuel 7:2; 1 Chronicles 17:1), and his counsel carried the weight of a divine word, capable of both endorsing and overturning the king's plans.
His relationship with David shows the prophetic office functioning as a check on royal power: he announces God's covenant favor to the king, yet later confronts the same king with his gravest sin. This pairing of promise and rebuke is central to how the tradition remembers him.