
The Feast of Booths, also known as the Festival of Tabernacles, was a week-long celebration when the Jews remembered the intervention of God during their wandering in the wilderness, as described in the book of Exodus. (Exodus 17:1-7)
As part of this holiday, the priests would carry water from the Pool of Siloam to the altar, remembering God's provision of water from the rock. The last day of the feast is the culmination of the festivities, when the priests would recite Psalm 118:25 while making seven circuits around the altar. This backdrop is crucial for understanding why Jesus spoke these particular words, at this particular time.