In the material world a person and his photograph, picture or statue are different. But the statue of Lord Kṛṣṇa and Kṛṣṇa Himself, the Supreme Personality of Godhead, are not different, because the Lord is absolute. What we call stone, wood and metal are energies of the Supreme Lord, and energies are never separate from the energetic. As we have several times explained, no one can separate the sunshine energy from the energetic sun. Therefore material energy may appear separate from the Lord, but transcendentally it is non-different from the Lord.
The Lord can appear anywhere and everywhere because His diverse energies are distributed everywhere like sunshine. We should therefore understand whatever we see to be the energy of the Supreme Lord and should not differentiate between the Lord and His arcā form made from clay, metal, wood or paint. Even if one has not developed this consciousness, one should accept it theoretically from the instructions of the spiritual master and should worship the arcā-mūrti, or form of the Lord in the temple, as non-different from the Lord.
Ref >> Srila Prabhupada Vani.