On the last, the great day of the feast — On this day there was the greatest concourse of people, and they were then wont to fetch water from the fountain of Siloam, which the priests poured out on the great altar, singing one to an other, With joy shall ye draw water from the wells of salvation. On this day likewise they commemorated God's miraculously giving water out of the rock, and offered up solemn prayers for seasonable rains.
Related Commentaries of John 7:37
John 7:37
37 In the last day, that great day of the feast, Jesus stood and cried, saying,If any man thirst, let him come unto me, and drink.