This supreme science was thus received through the chain of disciplic succession, and the saintly kings understood it in that way. This parampara system extends from Manu to Iksvaku and from Iksvaku to his sons and grandsons. The rulers of the world in the line of hierarchy execute the order of the Supreme Personality of Godhead in the parampara system. Anyone interested in peaceful life must participate in this parampara system and perform yajnas. As Gaudiya Vaisnavas in the parampara system of Sri Caitanya Mahaprabhu, we must perform sankirtana-yajna all over the world (yajnaih sankirtana-prayair yajanti hi sumedhasah [SB 11.5.32]). Sri Caitanya Mahaprabhu is the incarnation of the Supreme Personality of Godhead in this age of Kali, and He will be easily satisfied if the sankirtana movement is spread vigorously all over the world. This will also make people happy without a doubt.