Lord Ram and Lord Krishna are heard to speak Sanskrit on TV shows and movies and even in devotional stories. Their books are written in Sanskrit too; hence, it is reasonable to assume that Sanskrit must have been their language of communication as well. However, there is one important point here to consider. While the language of a holy book may not be the language spoken by people in their day-to-day lives, it does not have to be like that always. Here is where it gets really interesting. There is no recorded proof of the language spoken by Ram and Krishna.
