PURPORT

The word nirupita, meaning "concluded," is very significant in this verse. No one has to conduct research work to find God or make progress in spiritual knowledge. Everything is conclusively there in the Vedas. Therefore the Lord says in Bhagavad-gita:

Understanding the Supreme Personality of Godhead through the process of the Vedas is perfect and conclusive. The Vedas state, atah sri-krsna-namadi na bhaved grahyam indriyaih: the transcendental names, forms, qualities, paraphernalia and pastimes of the Lord cannot be understood by our blunt material senses. Sevonmukhe hi jihvadau svayam eva sphuraty adah: when a devotee engages his senses favorably in devotional service, the Lord, through His causeless mercy, reveals Himself to the devotee. This is the conclusive Vedic process. The Vedas also indicate that simply by chanting the holy names of the Lord one can without a doubt become spiritually advanced. We cannot approach the Supreme Personality of Godhead by the speed of mind or words, but if we stick to devotional service we can easily and quickly approach Him. In other words, the Supreme Lord is attracted by devotional service, and He can approach us more swiftly than we can approach Him with our mental speculation. The Lord has stated that He is beyond the range of mental speculation and the speed of thought, yet He can be approached easily by His causeless mercy. Thus only by His causeless mercy can He be attained. Other methods will not be effective.