Matthew Poole and continuators on Daniel 2:49

49 Then Daniel requested of the king, and he set Shadrach, Meshach, and Abed-nego over the affairs of the province of Babylon: but Daniel sat in the gate of the king .

He substituted them as Lieutenants for the Kings service, under Daniel, which as the curious observe, was chiefly about agriculture, and gathering revenues and provisions for the Court, but Daniel he was as Privy Counsellour and Lord Chamberlain, about arduous affairs of the King and Kingdom, sitting sometimes in judgment, and also admitting and conducting persons and causes to the King, as there was need, to whom there was difficult access, according to the Magnificence and Majesty of the Kings of the East. Thus Daniel sate in the Kings Gate, to be near and ready for the Kings chiefest business, and it notes honour, also high favour, but especiallly we must look upon Daniels promotion to be for the service and protection of his brethren in their present state of Captivity, as Mordecai was, which shewes that God doth remember his people in their low estate, and doth not leave himself without witness to them, in raising up nursing fathers for them.