yani kani cha papani
tani tani pranashyanti
pradakshinaha pade pade
By the circumambulation of Srimati Tulasi Devi all the sins that one may have committed are destroyed at every step, even the sin of killing a brahmana.
Vrnda devi is a pure devotee of Lord Krsna and is responsible for setting up the wonderful pastimes of Radha and Krsna in Vrndavana. She exists as Tulasi to benefit the fallen conditioned souls by bestowing devotional service to Krsna.