[hecht]

is there a biblical basis of the rosary?

[OneVike]

Only with the Catholic Church. As for the Bible, it has not a word, nor any inference to it. Check this out for some history.

History Of the rosary as the Catholic church teaches

[OneVike]

In my opinion, there is no difference between the story about where the rosary came from and Joseph Smiths account of his vision.

If you believe one, why not the other?