So long as one does not become simple like a child, one does not get divine illumination. Forget all the worldly knowledge that thou hast acquired and become as a child, and then will thou get the divine wisdom.
You must know that there are different tastes. There are also different powers of digestion... different temperaments... differences in the capacity to comprehend.
As a toy fruit or a toy elephant reminds one of the real fruit and the living animal, so do the images that are worshipped remind one of the God who is formless and eternal.
The truth is that you cannot attain God if you have even a trace of desire. Subtle is the way of dharma. If you are trying to thread a needle, you will not succeed if the thread has even a slight fiber sticking out.