Rakhi History
In the Vedic period, on the day of Shravan Purnima (full moon day of the Hindu month of Shravan), gods and demons clashed. Unfortunately, the demons were in a stronger position than the gods. The king of deities, Lord Indra, was very concerned about the outcome of the battle. His wife did not see him worried and prayed to the Almighty. She was a nun, so she made a thread out of her religious power and tied it around Indra's right wrist. He believed that this thread would protect Indra from demon attacks.
He was actually right in his beliefs as the deities won the battle that day and Lord Indra escaped unharmed. Festivals change over time. Rakhi is likewise called Raksha Bandhan. Rakhi has become a holy holiday for sisters and brothers. Sisters connect them to brothers. The priests bind them to the people of their community. In the Middle Ages, when a woman tied a rakhi to a man's hand, it became his highest religious duty to protect that woman. This man would risk his life to protect this woman's honor.