God in Sikhi is called Akal Purakh (which means "the true immortal") or "Vāhigurū" the Primal being. However, other names like Ram, Allah etc. are also used to refer to the same god, who is shapeless, timeless, and sightless: "niraṅkār", "akaal", and "alakh". Sikhi presents a unqiue perspective where God is present ("sarav viāpak") in all of its creation and does not exist outside of its creation. God must be seen from "the inward eye", or the "heart". Sikhs follow the Aad Guru Granth Sahib and are instructed to meditate on the Naam (Name of God - "Vāhigurū") to progress towards enlightenment, as its rigorous application permits the existence of communication between God and human beings.