More on Real Religion is Not Man Made
There is no such statement in the revealed scriptures [sastras] that Visnu/Krsna [God] reveals His teachings in many places simultaneously. When it is mentioned that religion is taught according to time, place and circumstances, then that is referring to bona-fide teachers of eternal religion like Sri Ramanujacarya and Sri Madhvacarya and not upstarts like Mohammed, Jesus or St. Paul.