The Padma Purana (6.71.279-282) relates that Lord Kalki will end the age of Kali and will kill all the wicked mlecchas and, thus, destroy the bad condition of the world. He will gather all of the distinguished brahmanas and will propound the highest truth. He will know all the ways of life that have perished and will remove the prolonged hunger of the genuine brahmanas and the pious. He will be the only ruler of the world that cannot be controlled, and will be the banner of victory and adorable to the world.
Here in these verses we find that Lord Kalki will come as a chastiser or warrior. By this time the planet will be filled with people who will be unable to understand logical conversations. They will be too slow-minded and dull-witted, not capable of being taught much, especially in the way of high philosophy regarding the purpose of life. They will not know what they need to do or how to live. And they certainly will be unable to change their ways. Therefore, Lord Kalki does not come to teach, but simply to chastise, punish, and cleanse the planet.
Furthermore, we also find the name of the place where Lord Kalki will appear and the name of the family in which He will be born. The family will be qualified brahmanas. This means that a disciplic and family line of spiritually qualified brahmanas will remain on the planet throughout the age of Kali, no matter how bad things get. Though they may be hidden, living in a small village somewhere, it will be this line of bhaktas, spiritual devotees, from which Lord Kalki will appear in the distant future. No one knows where this village of Shambala is located. Some feel that it is yet to manifest, or that it will be a hidden underground community from which Lord Kalki will appear