What does Ezekiel 47:1 mean?

Then the man brought me back to the entrance of the temple, and I saw water flowing out from under the threshold, heading east (since the temple faced east). The water was coming down from under the south side of the temple, south of the altar. Ezekiel 47:1 - Modern Text Bible

(Ezekiel sees a stream of water starting at the temple's entrance, symbolizing life and blessing flowing out from God's presence.)