The group of transcendentalists who follow the path of the inconceivable, unmanifested, impersonal feature of the Supreme Lord are called jñāna-yogīs, and persons who are in full Krishna consciousness, engaged in devotional service to the Lord, are called bhakti-yogīs. Now, here the difference between jñāna-yoga and bhakti-yoga is deﬁnitely expressed. The process of jñāna-yoga, although ultimately bringing one to the same goal, is very troublesome, whereas the path of bhakti-yoga, the process of being in direct service to the Supreme Personality of Godhead, is easier and is natural for the embodied soul. The individual soul is embodied since time immemorial. It is very difﬁcult for him to simply theoretically understand that he is not the body. Therefore, the bhakti-yogīaccepts the Deity of Krishna as worshipable because there is some bodily conception ﬁxed in the mind, which can thus be applied. Of course, worship of the Supreme Personality of Godhead in His form within the temple is not idol worship. There is evidence in the Vedic literature that worship may be saguṇa or nirguṇa – of the Supreme possessing or not possessing attributes. Worship of the Deity in the temple is saguṇa worship, for the Lord is represented by material qualities. But the form of the Lord, though represented by material qualities such as stone, wood or oil paint, is not actually material. That is the absolute nature of the Supreme Lord.
A crude example may be given here. We may ﬁnd some mailboxes on the street, and if we post our letters in those boxes, they will naturally go to their destination without difﬁculty. But any old box, or an imitation which we may ﬁnd somewhere but which is not authorized by the post ofﬁce, will not do the work. Similarly, God has an authorized representation in the Deity form, which is called arcā-vigraha. This arcā-vigraha is an incarnation of the Supreme Lord. God will accept service through that form. The Lord is omnipotent, all-powerful; therefore, by His incarnation as arcā-vigraha He can accept the services of the devotee, just to make it convenient for the man in conditioned life.
So for a devotee there is no difﬁculty in approaching the Supreme