Whoever understands this will become wise, and his endeavors will know perfection. The Lord clearly explains here that this is the substance of all revealed scriptures. And one should understand this as it is given by the Supreme Personality of Godhead. Thus one will become intelligent and perfect in transcendental knowledge. In other words, by understanding this philosophy of the Supreme Personality of Godhead and engaging in His transcendental service, everyone can become freed from all contaminations of the modes of material nature.
Devotional service is a process of spiritual understanding.
Wherever devotional service exists, the material contamination cannot coexist. The Lord is said to be the sun, and ignorance is called darkness. Where the sun is present, there is no question of darkness. Therefore, whenever devotional service is present under the proper guidance of a bona fide spiritual master, there is no question of ignorance. Everyone must take to this consciousness of Krsna and engage in devotional service to become intelligent and purified.