After executing that prescribed duty, the result is that I'll get my relationship with the Supreme Lord revived. These three things are described in the Vedas. There is no other thing.
So there are different kinds of knowledge in the Vedas. Veda is a vast knowledge. Even how we shall live in this material world, that is also described. Even medicine, medicine, the science of medicine is also described in Vedas. That is called Āyur-veda. The science of military science also described there in the Vedas. That is called Dhanur-veda. Yajur-veda . . . so many Vedas there are. And ultimately the knowledge is there, how to understand the Supreme Absolute Truth and how to get yourself liberated. That is . . . these are the subject matter of Vedas.
So in the Bhagavad-gītā also the Lord says, vedaiś ca sarvair aham eva vedyam (BG 15.15): "The ultimate purpose of Veda is to understand Kṛṣṇa." Ultimate. Vedaiś ca sarvair aham eva vedyam.