One must understand the transcendental birth of the Lord and the devotee. The purpose of the Lords taking birth is to establish devotional service, which is the perfect system of religion, and the purpose of the birth of a devotee is to broadcast the same system of religion, or the bhakti cult, all over the world. Prthu Maharaja was an incarnation of the power of the Lord to spread the bhakti cult, and the Lord blessed him to remain fixed in his position. Thus when the King refused to accept any material benediction, the Lord appreciated that refusal very much. Another significant word in this verse is acyuta, which means infallible. Although the Lord appears in this material world, He is never to be considered one of the conditioned souls, who are all fallible. When the Lord appears, He remains in His spiritual position, uncontaminated by the modes of material nature, and therefore in Bhagavad-gita the Lord expresses the quality of His appearance as atma-mayaya, performed by internal potency. The Lord, being infallible, is not forced by material nature to take birth in this material world. He appears in order to reestablish the perfect order of religious principles and to vanquish the demoniac influence in human society.