Complex sentence: In Sikh way of things, that is the ONE and only ONE definition of/God/Sikh/Khalsa/Saint/human being and the standard and formal name of every Sikh acccross the world, which Gurbani expects every Sikh to bear.
Split into simpler sentences: In Sikh way of things, that is the ONE and only ONE definition of/God/Sikh/Khalsa/Saint/human being. It is the standard and formal name of every Sikh acccross the world, which Gurbani expects every Sikh to bear.