ज्यायसी चेत्कर्मणस्ते मता बुद्धिर्जनार्दन। तत्किं कर्मणि घोरे मां नियोजयसि केशव ॥

jyāyasī chet karmaṇas te matā buddhir janārdana tat kiṁ karmaṇi ghore māṁ niyojayasi keśhava

If it be thought by Thee that knowledge is superior to action, O Janârdana, why dost Thou, O Keshava, enjoin on me this terrible action?

In plain words: Arjuna is confused. He asks Krishna, calling him Janārdana and Keshava, why Krishna is pushing him into this terrible battle if knowledge is better than action.