Ezekiel 47:1-2

1The man brought me back to the entrance to the temple, and I saw water coming out 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 temple, south of the altar.

2He then brought me out through the north gate and led me around the outside to the outer gate facing east, and the water was trickling from the south side.