One may ask that if Caitanya Mahāprabhu is Kṛṣṇa Himself, then why did He need a spiritual master? Of course, He did not need a spiritual master, but because He was playing the role of ācārya (one who teaches by example), He accepted a spiritual master. Even Kṛṣṇa Himself accepted a spiritual master, for that is the system. In this way the Lord sets the example for men. We should not think, however, that the Lord takes a spiritual master because He is in want of knowledge. He is simply stressing the importance of accepting the disciplic succession. The knowledge of that disciplic succession actually comes from the Lord Himself, and if the knowledge descends unbroken, it is perfect.