Ezekiel 47:1-2

1Then he brought me back to the entrance of the temple and there was water flowing from under the threshold of the temple toward the east, for the temple faced east. The water was coming down from under the south side of the threshold of the temple, south of the altar.

2Next he brought me out by way of the north gate and led me around the outside to the outer gate that faced east; there the water was trickling from the south side.