These two (Yudhishthira and Krishna) were always agreeable to Arjuna. These two were only competent to address him all occasions, in as much as they were held in great veneration and dear love.
सर्वास्ववस्थासु हितावर्जुनस्य मनोनुगौ। बहुमानात् प्रियत्वाच्च तावेनं वक्तुमर्हतः॥