How can listening change you?
What does it actually mean to be foul-mouthed according to Guru Nanak Dev Ji? The moment we curse at God for getting things wrong is the definition of being foul-mouthed. Praising Vaheguru (God) is when we're in a state of acceptance and understanding that the things that happen around us are a play of divine will, in the same way Guru Gobind Singh Ji did, after seeing his sons and Singhs being martyred before his eyes, singing in a state of acceptance to Vaheguru, calling Vaheguru their beloved...
