BG 4.38

In this world, there is nothing as purifying as divine knowledge. One who has attained purity of mind through prolonged practice of Yog, receives such knowledge within the heart, in due course of time.

BG 9.22

There are those who always think of Me and engage in exclusive devotion to Me. To them, whose minds are always absorbed in Me, I provide what they lack and preserve what they already possess.

BG 16.1-3

The Supreme Divine Personality said: O scion of Bharat, these are the saintly virtues of those endowed with a divine nature—fearlessness, purity of mind, steadfastness in spiritual knowledge, charity, control of the senses, sacrifice, study of the sacred books, austerity, and straightforwardness; non-violence, truthfulness, absence of anger, renunciation, peacefulness, restraint from fault-finding, compassion toward all living beings, absence of covetousness, gentleness, modesty, and lack of fickleness; vigor, forgiveness, fortitude, cleanliness, bearing enmity toward none, and absence of vanity.