Oualities of Krsna Further Explained
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51. Changeless
Kṛṣṇa does not change His constitutional position, not even when He appears in this material world. Ordinary living entities have their constitutional spiritual positions covered. They appear in different bodies, and under the different bodily concepts of life they act. But Kṛṣṇa does not change His body. He appears in His own body and is therefore not affected by the modes of material nature. In the First Canto, 11th Chapter, 24th verse, of  Śrīmad-Bhāgavatam  it is stated that the special prerogative of the supreme controller is that He is not at all affected by the modes of nature. The practical example of this is that devotees who are under the protection of the Lord are also not affected by material nature. To overcome the influence of material nature is very difficult, but the devotees or the saintly persons who are under the protection of the Lord are not affected. So what need is there to speak of the Lord Himself? To be more clear, although the Lord sometimes appears in this material world, He has nothing to do with the modes of material nature, and He acts with full independence in His transcendental position. This is the special quality of the Lord.
52. All-cognizant
Any person who can understand the feelings of all persons and incidents in all places at all times is called all-cognizant.
A nice example of the all-cognizant quality of the Lord is described in  Śrīmad-Bhāgavatam , First Canto, 15th Chapter, 11th verse, in connection with Durvāsā Muni’s visit to the house of the Pāṇḍavas in the forest. Following a calculated plan, Duryodhana sent Durvāsā Muni and his ten thousand disciples to be guests of the Pāṇḍavas in the forest. Duryodhana arranged for Durvāsā and his men to reach the place of the Pāṇḍavas just when the Pāṇḍavas’ lunchtime was ended, so that the Pāṇḍavas would be caught without sufficient means to feed such a large number of guests. Knowing Duryodhana’s plan, Kṛṣṇa came to the Pāṇḍavas and asked their wife Draupadī if there were any remnants of food which she could offer to Him.