Bhagavad Gita 4.8
परित्राणाय साधूनां विनाशाय च दुष्कृताम्।धर्मसंस्थापनार्थाय संभवामि युगे युगे॥
paritrāṇāya sādhūnāṃ vināśāya ca duṣkṛtām |dharmasaṃsthāpanārthāya saṃbhavāmi 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.
To protect the righteous, to destroy the wicked, and to establish the kingdom of God, I am reborn from age to age.
Our plain-language meaning of this verse is waiting for scholar review.