Mantra Four
27
has His Personal existence solely in the impersonal  Brahman . Men are accustomed to reach conclusions only according to their own capacity to understand. But the Supreme Lord is not subject to our limited capacity to understand Him. It is for this reason that the  Upaniṣads  warn us: no one can approach the Lord by his own limited potency.
In the  Bhagavad-gītā , the Lord says that no one, not even the great  ṛṣis  and  suras , can know Him. So what is there to say of the  asuras , who are not even qualified to understand the ways of the Lord? All these words mentioned in Mantra Four of  Śrī Īśopaniṣad  suggest very clearly that the Absolute Truth is ultimately the Absolute Person; otherwise there would have been no necessity of mentioning so many varied things in support of His Personal features.
Individual parts and parcels of the potencies of the Lord, although having all the symptoms of the Lord Himself, have limited spheres of activities, and therefore are all limited. The parts and parcels are never equal to the whole. Therefore the parts and parcels cannot appreciate the full potency of the Lord. Foolish and ignorant living beings who are parts and parcels of the Lord, under the influence of the material energy, try to make a conjecture on the transcendental position of the Lord.  Śrī Īśopaniṣad  warns them not to make any mental speculation about the identity of the Lord. Try to know the Transcendence from the superior source of the  Vedas , which is already in knowledge of the Transcendence.
Every part of the Complete Whole is endowed with some particular energy to act, and forgetfulness by that part of his particular activities is called  māyā , illusion.  Śrī Īśopaniṣad  has therefore, from the very beginning, warned us that we should be careful to play the part designated for us by the Lord. This, however, does not mean that the individual soul has no initiative of his own. Because he is the part and parcel of the Lord he must have the initiative of the Lord as well. Proper use of one's initiative, active nature, with intelligence to understand that