Gayatri is not a woman nor this mantra belong to a particular religion or country. It is only the name and the form of a deity.
(From : Garland of 1008 Gems, Bhagawan Shri Sathya Sai Baba's Sayings)
When you have no faith in God, you cannot gauge the efficacy of Grace. If you discard Rama and Krishna, they cannot stand by you in your hour of need. You do not attach yourself to Sai Baba and so you do not receive His Grace. If you start with cynicism and doubt and try to criticize and discover faults, the result is deeper ignorance and confusion. Unholy thoughts fog the mind with foul fumes. How can clarity come to the vision then?