Looks like there were no copyright issues in the period of mythology
1.What is common between Jesus, Moses, and Krishna?
Kings tried to kill them when they were born.
2. What is common between Karna, Moses, and Sargon?
They were all kept in a basket and set to sail in a river after they were born.
3.What is common between Karna and Jesus ?
Jesus: Really? Do you need a Wikipedia citation :)