Bhagavad Gita

ತಮುವಾಚ ಹೃಷೀಕೇಶಃ ಪ್ರಹಸನ್ನಿವ ಭಾರತ ।
ಸೇನಯೋರುಭಯೋರ್ಮಧ್ಯೇ ವಿಷೀದಂತಮಿದಂ ವಚಃ ॥೧೦॥
tamuvāca hṛṣīkeśaḥ prahasanniva bhārata |
senayorubhayormadhye viṣīdaṃtamidaṃ vacaḥ ||10||

Gist of the sloka:
Stationed in between the armies, to the King in the lineage of Bharatha dynasty, Lord Krishna with a smile on his face thus spoke to Arjuna.
Arjuna had completely surrendered himself to the Lord. He had surrendered bodily, through his mind and in thoughts. He has controlled the emotions and realized he needs guidance and was willing to take such a guidance.
One should therefore remove their ego and surrender to the Lord. When a person surrenders himself to the Lord in such a fashion, Lord certainly helps and guides them. This is a lesson for all of us to obtain His grace.