SB 1.9 - Kṛṣṇa, the leader of the sātvatas
Bhīṣma said he would invest his thinking, feeling and willing in the Lord, who though self satisfied still enjoys transcendental pleasure by descending on the material world from whom it is created. Being the head of the Kuru dynasty, Bhīṣma’s mind was strewn over so many subjects so far. But now he wanted to achieve pure devotion to Kṛṣṇa. Kṛṣṇa descends on earth to bestow the boon of devotional service upon His pure devotees. He descends sometimes as Lord Kṛṣṇa as He is, and sometimes as Lord Caitanya. Both are leaders of the pure devotees, who are sātvatas. Unless one is purified from all sorts of material desires, the Lord does not become one’s leader.
The Lord is the leader of all the living beings, both the devotees and non devotees. But His dealings are different with them. Non devotees never care to take any instruction from the Lord, and so He is silent in their case, although He witnesses all their activities and awards them the necessary results, good or bad. The devotees, being beyond good and bad, have no desire for anything material. Desiring their association, Kṛṣṇa descends to enliven them. He appears out of His own will and not forced by the conditions of material nature, and thus He is addressed as Vibhu, the almighty.