Haridasa Thakura is known as namacarya because it is he who preached the glories of chanting hari-nama, the holy name of God. By using the words tomara avatara ("your incarnation"), Sri Caitanya Mahaprabhu confirms that Haridasa Thakura is the incarnation of Lord Brahma. Srila Bhaktisiddhanta Sarasvati Thakura says that advanced devotees help the Supreme Personality of Godhead in His mission and that such devotees or personal associates incarnate by the will of the Supreme Lord. The Supreme Lord incarnates by His own will, and, by His will, competent devotees also incarnate to help Him in His mission. Haridasa Thakura is thus the incarnation of Lord Brahma, and other devotees are likewise incarnations who help in the prosecution of the Lord's mission.