Krishna preaching Arjuna .. The text being in Geeta.
"You are the original lamp. Other incarnations may possess the same candle power as the original lamp but the original lamp is the beginning of all light" Lord Brahma, in "Prayers Offered by Lord Brahma to Lord Krsna," #KRSNA BOOK, Chapter 14
Krishna shows Arjuna God's Universal Form.
Krishna & Arjuna
Lord Krishna & Arjuna
Hindu Art: Krishna show His universal form to Arjuna