The Vedic hymn Gayatri is among the best-known mantras and prayers of all time.
The apparent personalization which takes place in its popular versions is a poetic device. It is the equivalent to calling the Sun, the Moon and the Stars brothers, and saying that the rivers and trees are part of our personal immediate family.
These various statements are true in a fundamental sense, since the intelligence of the universe is multiple and dwells everywhere. On the other hand, it is important to preserve common sense and an impersonal attitude. Any idea of a monotheistic “God” would be a dangerous fiction.
The intelligences that guide the universe are plural, and countless. It is better not to address the One Law as if it were a human being.
This is one of the versions of the Gayatri in English, to which we add the words “Universal Law” instead of “Thou”:
“O Universal Law, which gives sustenance to the cosmos and to ourselves, from which all proceeds and unto which all must at last return, unveil that face of the true spiritual Sun which is now hidden by a vase of golden light, that we may see the Truth and do our whole duty on our journey to Thy sacred seat.” 
The journey to the sacred seat of the universal law is the journey to our true self. It is the voyage from the lower self to the realm of our spiritual soul, or from personal consciousness to cosmic awareness.
The contents of the Gayatri relates to the teachings presented in the masterpiece of esoteric philosophy, “The Secret Doctrine”, by Helena P. Blavatsky. The founder of the modern esoteric movement comments the verses and concepts present in the Gayatri on pages 244-254 of the volume “Letters of H.P. Blavatsky to A.P. Sinnett” (TUP).
These two versions of the mantra deserve a meditative hearing:
1. The Longer Version of the Gayatri