यदा यदा हि धर्मस्य ग्लानिर्भवति भारत।अभ्युत्थानमधर्मस्य तदात्मानं सृजाम्यहम् ॥ परित्राणाय साधूनां विनाशाय च दुष्कृताम् ।धर्मसंस्थापनार्थाय सम्भवामि युगे युगे ॥ This shlok from Shrimad Bhagvat Geeta has it all about the reason for incarnation of the Supreme God. It keeps reminding us the promise almighty has given that he would be saving us from the emerging evil powers whenever we humans won’t be able to fight it. Dashavatar serves as a chronicle of how, as what and why would ‘He’ descend!