God Is Standing Before Me - Prabhupada 0274
731009 - Lecture BG 13.15 - Bombay
When arcā-mūrti, the Deity worship in the temple, if one thinks it is made of stone, it is made of wood, that is very offensive. One should not think like that. God is omnipotent, all-powerful. He can accept your service even in this form. But because He has assumed this form, don't neglect it that, "It is stone." Then it will be offensive. It is to show you mercy, arcā-mūrti. Otherwise all the great saintly persons, just like Rāmānujācārya, Madhvācārya, all big, big ācāryas who were actually controlling the Vedic civilization still, they established thousands of temples and mūrtis, especially in South India. Still Raṅganātha temple, Tirupati temples, visited by hundreds and thousands of people. So does it mean they have all become fools? They go to see some stone? No.
Therefore one has to become a devotee. Because only devotee can understand that "Here is the Supreme Personality of Godhead personally standing before me."