If you are searching for truth then you do not get entangled with Gurus dead or living because it will block you from Self-realization.+

Yogis and Gurus are not Gods.

This idea of worshiping a Guru as God is not a Vedic idea but adopted from Jainism and Buddhism.

Vedas bar 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 to worship and glorify the Gurus 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.

Remember:~

There is no goal greater than Self-realization; there is no truth higher than the invisible Soul, the Self. The invisible Soul is infinite. God in truth and Soul are identical because the Soul itself is God in truth.

How you know what your Guru preaches to you is the ultimate truth. Simply because others are following some guru, you also think you need a Guru.

If you are searching for the truth then there is no need for Guru. You need a Guru if you are searching for something else other than the truth of your existence. 

If you are searching for truth then you do not get entangled with Gurus dead or living because it will block you from Self-realization.

That is why Buddha said: ~ “Believe nothing because a wise man said it, Believe nothing because it is generally held. Believe nothing because it is written. Believe nothing because it is said to be divine. Believe nothing because someone else said it. But believe only what you, yourself judge to be true

The Guru is useless so long as the ultimate truth is unknown, and the Guru is equally useless when the ultimate truth or Brahman has already been known.

A Guru is needed in the religious and the yogic path. There is no need for a Guru to acquire Self-knowledge or Brahma Gnana or Atma Gnana.

Bhagvan Buddha: - There are only two mistakes one can make along the road to truth: not going all the way... and not starting.

Yoga Vasistha says: ~ “Self-knowledge or knowledge of truth is not had by resorting to a Guru (preceptor) nor by the study of scripture, nor by good works: it is attained only through inquiry inspired by the company of wise (Gnani). One’s inner light alone is the means, naught else. When this inner light is kept alive, it is not affected by the darkness of inertia.

Swami Vivekananda said:~ “You have to grow from the inside out. None can teach you, and none can make you spiritual. There is no other teacher but the  Soul.”

Self–knowledge or Brahma Gnana or Atma Gnana is the knowledge of the Supreme Spirit or God in truth, while religious Knowledge is lower knowledge meant for the ignorant populace. :~Santthosh Kumaar