Bhagavad Gita, Chapter 16, Verse 5

The divine state is deemed to make for liberation, the Asurika for bondage; grieve not, O Pândava, you are born for a divine state.

Krishna reassures Arjun here directly, naming him as already born with the better of the two natures.

This isn't left as an abstract comparison, Krishna applies it personally, telling Arjun exactly where he stands. Real reassurance follows real classification.