Tthe knower, who possesses knowledge of Reality, and who, on account of having knowledge of Reality, is ever disciplined and, on account of not seeing any other object of worship, has single-minded devotion—that person excels, that is, is endowed with excellent qualities in abundance. He goes beyond [all others] ~ The Bhagavad Gita

Jai Shri Krishna! 
7.16. Persons of good deeds who worship Me, O Arjuna, are of four types: the afflicted, the seeker of knowledge, the seeker of material well-being, and the knower.

7.17. Among these, the knower, ever disciplined, who has single-minded devotion, excels. For I am exceedingly dear to the knower, and he is dear to me. Among them, between those four, the knower, who possesses knowledge of Reality, and who, on account of having knowledge of Reality, is ever disciplined and, on account of not seeing any other object of worship, has single-minded devotion—that person excels, that is, is endowed with excellent qualities in abundance. He goes beyond [all others]. This is the idea. Since I am the Self of the knower, therefore I am exceedingly dear to him. It is well known in the world that the Self is dear. Therefore, Vasudeva, on account of being the Self, is dear to the knower. This is the idea. And the knower, being the very Self of Me who am Vasudeva, is exceedingly dear to Me.
7.18. All these are noble, but the knower I deem to be My very Self, for he—with disciplined mind—is fixed on Me alone, the unexcelled goal. But the knower is the very Self, not different from Me, this is my settled conclusion. The knower is disciplined in mind, that is, mentally concentrated, having the idea ‘‘I myself am the Blessed Lord Vasudeva, nothing less.’’ Being such, he rises to attain Me, the supreme Brahman, the ultimate goal.
7.19. At the end of many births, one possessed of knowledge attains Me, thinking, ‘‘Vasudeva is all!’’ Such a great soul is exceedingly difficult to find.
-The Bhagavad Gita