An analogy will help us understand the distincion between ourselves and God. From the ground we may see only clouds in the sky, but if we fly above the clouds we can see the sun shining. From the sky, skyscrapers and cities seem very tiny; similarly, from God's position this entire material creation is insignificant. The tendency of the living entity is to come down from the heights, where everything can be seen in perspective. God, however, does not have this tendency. The Supreme Lord is not subject to falling down into illusion (māyā) any more than the sun is subject to falling beneath the clouds. Impersonalist philosophers (Māyāvādīs) maintain that both the living entity and God Himself are under the control of māyā when they come into this material world. This is the fallacy of their philosophy.
Lord Caitanya Mahāprabhu should therefore not be considered one of us. He is Kṛṣṇa Himself, the supreme living entity, and as such He never comes under the cloud of māyā. Kṛṣṇa, His expansions and even His higher devotees never fall into the clutches of illusion. Lord Caitanya came to earth simply to preach kṛṣṇa-bhakti, love of Kṛṣṇa. In other words, He is Lord Kṛṣṇa Himself teaching the living entities the proper way to approach Kṛṣṇa. He is like a teacher who, seeing a student doing poorly, takes up a pencil and writes, saying, "Do it like this: A, B, C." From this one should not foolishly think that the teacher is learning his ABC's. Similarly, although Lord Caitanya appears in the guise of a devotee, we should not foolishly think He is an ordinary human being; we should always remember that Lord Caitanya is Kṛṣṇa (God) Himself teaching us how to become Kṛṣṇa conscious, and we must study Him in that light.