One of my favorite verses from the Bhagavad Gita (and also one of the most popular ones) goes- यदा यदा हि धर्मस्य ग्लानिर्भवति भारत । अभ्युत्थानमधर्मस्य तदात्मानं सृजाम्यहम् ॥४-७॥ परित्राणाय साधूनां विनाशाय च दुष्कृताम् । धर्मसंस्थापनार्थाय सम्भवामि युगे युगे ॥४-८॥ Yada yada hi dharmasya glanirbhavati bharata Abhythanamadharmasya tadatmanam srijamyaham Paritranaya sadhunang vinashay cha dushkritam Dharmasangsthapanarthay sambhabami yuge yuge Here Krishna is telling Arjuna that whenever there is decay of "dharma" (a concept that is not easily translated in English in fact, but more commonly translated as "one's duty" or "righteousness") in the world he will be born again to restore righteousness and destroy evil. Some people take this literally i.e. through reincarnation Krishna will be born again in a human form and take these actions. However, I think that is not what this means. Krishna is not a person here but he is knowledge, ideas. What he is ...
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