* eighth day.
   Though this day was properly a distinct festival, and esteemed
   the chief or high day of the feast, yet fewer sacrifices are
   appointed for it than for any of the foregoing seven.  On
   every one of them two rams and fourteen lambs were offered;
   but on this day there were but half as many; and whereas seven
   bullocks were the fewest that were offered on any of those
   days, on this there was only one.  At this feast, there was an
   extraordinary ceremony of which the rabbins inform us, namely,
   the drawing water out of the pool of Siloam, and pouring it,
   mixed with wine, on the sacrifice as it lay on the altar.
   This they are said to have done with such expressions of joy,
   that it became a common proverb, "He that never saw the
   rejoicing of drawing of water, never saw rejoicing in all his
   life."  The Jews pretend to ground this custom on the
   following passage of Isaiah, (ch. 12:3,) "With joy shall ye
   draw water out of the wells of salvation;" and to this
   ceremony Jesus is supposed to refer, when "in the last day,
   the great day of the feast, he stood and cried, saying, If any
   man thirst, let him come unto me, and drink: he that believeth
   on me, as the Scripture saith, out of his belly shall flow
   rivers of living water," (Joh 7:37, 38:) thereby calling off
   the people from their carnal mirth and festive and pompous
   ceremonies, to seek spiritual refreshment for their minds.

  Le 23:36  Joh 7:37-39  Re 7:9-17