Hearken to the supplication of thy people, &c. He asks not that God would help them without their praying for themselves, but that God would help them in answer to their prayers. Even Christ's intercession does not supersede, but encourages our supplications.
Related Commentaries of 2 Chronicles 6:21
2 Chronicles 6:21
21 Hearken therefore unto the supplications of thy servant, and of thy people Israel, which they shall makeb toward this place: hear thou from thy dwelling place, even from heaven; and when thou hearest, forgive.