Lord Krsna, the Supreme Personality of Godhead, is the prime protector of brahminical culture and the cow. Without knowing and respecting these, one cannot realize the science of God, and without this knowledge, any welfare activities or humanitarian propaganda cannot be successful. The Lord is purusa, or the supreme enjoyer. Not only is He the enjoyer when He appears as a manifested incarnation, but He is the enjoyer since time immemorial, from the very beginning (puratanah), and eternally (nityam). Yac-caranabhivandanat: Prthu Maharaja said that the Supreme Personality of Godhead attained this opulence of eternal fame simply by worshiping the lotus feet of the brahmanas. In the Bhagavad-gita it is said that the Lord does not need to work to achieve material gain. Since He is perpetually supremely perfect, He does not need to obtain anything, but still it is said that He obtained His opulences by worshiping the lotus feet of the brahmanas. These are His exemplary actions. When Lord Sri Krsna was in Dvaraka, He offered His respects by bowing down at the lotus feet of Narada. When Sudama Vipra came to His house, Lord Krsna personally washed his feet and gave him a seat on His personal bed. Although He is the Supreme Personality of Godhead, Lord Sri Krsna offered His respects to Maharaja Yudhisthira and Kunti. The Lords exemplary behavior is to teach us. We should learn from His personal behavior how to give protection to the cow, how to cultivate brahminical qualities and how to respect the brahmanas and the Vaisnavas. The Lord says in Bhagavad-gita (3.21), yad yad acarati sresthas tat tad evetaro janah: If the leading personalities behave in a certain manner, others follow them automatically. Who can be more of a leading personality than the Supreme Personality of Godhead, and whose behavior could be more exemplary? It is not that He needed to do all these things to acquire material gain, but all of these acts were performed just to teach us how to behave in this material world.