Jamieson, Fausset and Brown on 2 Chronicles 23:13

13. behold, the king stood at his pillar at the entering in--The king's pillar was in the people's court, opposite that of the priests'. The young king, arrayed in the royal insignia, had been brought out of the inner, to stand forth in the outer court, to the public view. Some think that he stood on the brazen scaffold of Solomon, erected beside the pillar [see on 2Ch 6:13].