PURPORT

Thorn trees generally grow in deserted places, not in sandalwood forests, but the seminal brahmanas Sanda and Amarka compared the dynasty of the Daitya Hiranyakasipu to a sandalwood forest and compared Prahlada Maharaja to a hard, strong thorn tree that could provide the handle of an axe. They compared Lord Visnu to the axe itself. An axe alone cannot cut a thorn tree; it needs a handle, which may be made of the wood of a thorn tree. Thus the thorn tree of demoniac civilization can be cut to pieces by the axe of visnu-bhakti, devotional service to Lord Krsna. Some of the members of the demoniac civilization, like Prahlada Maharaja, may become the handle for the axe, to assist Lord Visnu, and thus the entire forest of demoniac civilization can be cut to pieces.