The Deity Form of The Lord
You want to see God through your material eyes, so God manifests through matter in the form of a deity.
Representatives of The Supreme Personality of Godhead
In this material world there are only two representatives of the Supreme Personality of Godhead; the transcendental sound vibration of the Holy Name and his eternally transcendental deity incarnation.
The Divine Darshan
By taking darshana of the archavigraha, the deities, our attachment to our body fades away.
Agnostics
One who does not accept the transcendental form of the Lord is certainly an agnostic. Such a person should be neither seen nor touched. Indeed, he is subject to be punished by Yamaraja [the lord of death].