Bhagavad Gita, Chapter 4, Verse 8

परित्राणाय साधूनां विनाशाय च दुष्कृताम् । धर्मसंस्थापनार्थाय सम्भवामि युगे युगे

paritrāṇāya sādhūnāṃ vināśāya ca duṣkṛtām | dharmasaṃsthāpanārthāya sambhavāmi yuge yuge

Translation

For the protection of the good, for the destruction of evil-doers, for the firm establishment of religion, I am born in every age.

— Alladi Mahadeva Sastri

Word meanings

paritrāṇāya
for the protection
sādhūnām
of the good
vināśāya
for the destruction
ca
and
duṣkṛtām
of evil-doers
dharmasaṃsthāpanārthāya
of duty, of the establishing, for the sake
sambhavāmi
(I) am born
yuge
in age
yuge
in age

Śaṅkarācārya's commentary

The good: those who are in the right path.