"The Lord's original form is that of Sri Krishna, and Sri Krishna expands Himself into an unlimited number of forms like Baladeva, Rama, Nrsimha, Varaha, etc. All of these forms are one and the same Personality of Godhead. Similarly, the arca-vigraha which is worshiped in temples is also an expanded form of the Lord. By worshiping the arca-vigraha, one can at once approach the Lord, who accepts the service of a devotee by His omnipotent energy. The arca-vigraha of the Lord descends upon the request of the acaryas, the holy teachers, and works exactly in the original way of the Lord by virtue of the Lord's omnipotent energy. Foolish people who have no knowledge of Sri Isopanisad or of any of the other sruti mantras consider the arca-vigraha, which is worshiped by pure devotees, to be made of material elements. This form may be seen as material by the imperfect eyes of foolish people or kanistha-adhikaris, but such people do not know that the Lord, being omnipotent and omniscient, can transform matter into spirit and spirit into matter as He desires."
(Sri Isopanisad, Mantra 8, Purport)
*Special thanks to Jaya Murari Prabhu for sharing so many beautiful Deity photos from New Vrindaban Dhama.