The actual purpose of Lord Caitanya's stay at Varanasi after coming back from Vrndavana was to meet Sanatana Gosvami and teach him. Sanatana Gosvami met Sri Caitanya Mahaprabhu after the Lord's return to Varanasi, where the Lord taught him for two months about the intricacies of Vaisnava philosophy and Vaisnava activities. After completely instructing him, He sent him to Vrndavana to execute His orders. When Sanatana Gosvami went to Vrndavana, there were no temples. The city was lying vacant like an open field. Sanatana Gosvami sat down on the bank of the Yamuna, and after some time he gradually constructed the first temple; then other temples were constructed, and now the city is full of temples, numbering about five thousand.