Vedas indicates the worship of Gurus and Godmen as Gods barred by Vedas because Gurus and Godmen belong to the dualistic illusion or Maya.+

From the Vedic perspective, people who worship human beings in place of God are extremely foolish and fall into an awful hell of pain and sorrow, and suffer.  

So, Vedas indicates the worship of Gurus and Godmen as Gods barred by Vedas because Gurus and Godmen belong to the dualistic illusion or Maya.  Gurus and Godmen are not holy because they are part and parcel of the illusion. Atman the Self alone is holy and all else is an illusion.   

The dualistic illusion hides the Atman, the God in truth.  

Rig Veda: ~ The Atman is the cause; Atman is the support of all that exists in this universe. May ye never turn away from the Atman, the Self. May ye never accept another God in place of the Atman nor worship other than the Atman?" (10:48, 5)

Vedas bars human worship: ~

"They are enveloped in darkness, in other words, are steeped in ignorance and sunk in the greatest depths of misery who worship the uncreated, eternal prakrti -- the material cause of the world -- in place of the All-pervading God, But those who worship visible things born of the prakrti, such as the earth, trees, bodies (human and the like) in place of God are enveloped in still greater darkness, in other words, they are extremely foolish, fall into an awful hell of pain and sorrow, and suffer terribly for a long time.":~  (Yajur Veda 40:9.)

Then why worship and glorify the Guru s and Yogis (human form)   in place of God when Veda bars such activities and it also warns people who indulge in such activities are enveloped in still greater darkness, in other words, they are extremely foolish, fall into an awful hell of pain and sorrow, and suffer terribly for a long time.

No one has ever seen God by practicing religion or yoga or indulging in glorifying the religious God and Goddesses because God exists prior to the form, time, and space.  

The form, time, and space cease to exist as a reality when wisdom dawns. Thus, the Gods and Guru s have no place in the domain of the Advaitic reality. Advaita is the nature of the Soul, which is God in truth.  

Thus, Self-realization is the only way to God-realization. By worshipping the religious Gods and Guru s one will not get Self-realization or God-realization.

The Soul, the inner Guru revels ‘what is real’ and ‘what is unreal” when the seeker is receptive and ready. : ~ Santthosh Kumaar