How Atharvaveda became the fourth Veda

Vedas are the most ancient religious scriptures of Hinduism. They are A-purusheya, which means they have not been created by any Human. These Vedas appeared in front of our sages, and they, compiled them. 

As we all know, there are a total of four Vedas, namely, Rigveda, Yajurveda, Samaveda and Atharvaveda. 

But, initially there were only three Vedas. Atharvaveda was not a part of this set. It, afterwards, got included into the list. But how did that happen? Well, our Puranas include an interesting story, about Atharvaveda’s inclusion, into the four Vedas.