The Lord is visible only when He reveals himself. Even when he sometimes mentions who He really is, he is not taken seriously. When the itinerant preacher who worshipped Bala Gopalaji, entered Jagannath Misra’s home, the Lord, as Caitanya Mahaprabhu, told the Brahmana that he was “desecrating” the Brahmana’s offerings by taking them and eating them (rice) because the Brahmana was calling Him. The Brahmana thought the young boy was simply talking nonsense. When He told Kolaveca Sridhara, He was the source of the Ganges, Sridhara didn’t believe Him because the Lord wasn’t ready to reveal to Sridhara yet His true identity.