Eknath Easwaran's Commentary
With infinite tenderness, the Lord lets it dawn on us only gradually that we are not separate, that we belong entirely to him. If this realization were to come overnight, ordinary people like you and me would not be able to withstand it; it would be more than our nervous systems could bear. That is why the Lord is so gentle with us; he spreads the transformation from separateness to unity out over many years so that all these changes in the mind and body can take place gradually. Often we are not even aware they are taking place until we look back and remember how we were some years before.
We should not ask when illumination will come. We should have a patient impatience to reach the goal. Finally, after many years, no matter what our past has been, we will begin to live in the light that knows no night. The temple may have been dark for a thousand years, but once the lamp is lit, every corner will be ablaze with light.