Chapter 4, Verse 8
Part of 4: Jñāna Karm Sanyās Yog — ज्ञानकर्मसंन्यासयोगपरित्राणाय साधूनां विनाशाय च दुष्कृताम्। धर्मसंस्थापनार्थाय संभवामि युगे युगे॥
paritrāṇāya sādhūnāṁ vināśhāya cha duṣhkṛitām dharma-sansthāpanārthāya sambhavāmi yuge yuge
For the protection of the good, for the destruction of the wicked, and for the establishment of righteousness, I am born in every age.
Sadhunam The good who lead a life of righteousness, who utiles their bodies in the service of humanity, who are free from selfishness, lust and greed, and who devote their lives to divine contemplation. Dushkritam Evildoers who lead a life of unrighteousness, who break the laws of the society, who are vain and are dishonest and greedy, who injure others, who take possession of the property of others by force, and who commit atrocious crimes of various sorts.