Hinduism along with the Hebrew religion is the oldest among religions in the world. There is also no doubt that the reach of Hinduism was much greater than any religion at that time( 4000-5000BC) including  Judaism. Islam and Christianity have come much later nearly 2500 years after Hindu

 The sword is part of Hindu psyche and its origin can be traced to 5000 BC. The first mention of a sword is in the Mahabharata. The epic mentions the sword as a personal weapon and it was carried by all warriors. The credit for developing this must go to the genius of Hindus