The spiritual sky contains innumerable spiritual planets, the Vaikuṇṭhas, which are manifestations of the Supreme Lord's internal energy. Innumerable material universes are similarly exhibited by His external energy, and the living entities are manifested by His marginal energy. Because Lord Kṛṣṇa Caitanya is not different from Lord Kṛṣṇa, He is the cause of all causes; there is no cause beyond Him. He is eternal, and His form is spiritual. Lord Caitanya is directly the Supreme Lord, Kṛṣṇa, as the evidence of authoritative scriptures proves. This chapter stresses that a devotee who wishes to advance in Kṛṣṇa consciousness must have knowledge of Kṛṣṇa's personal form, His three principal energies, His pastimes and the relationship of the living entities with Him.