The man brought me back to the entrance of 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. -Ezekiel 47:1
Then the angel showed me the river of the water of life, as clear as crystal, flowing from the throne of God and of the Lamb -Revelation 22:1