As best as I can make it out, this is a song about a soldier's Seder Hayom. Must arise early to say Modeh Ani, wash negel vasser, go the the Beis Hamidrash, put on Tallis and Tefilin, and doubt everything, never, never accept that which is limited and small as the Infinite. The time is Now.
In the book AlephShin, there is a scene in which an huge underground explosion set of by the Messiah both splits the Mount of Olives (as described in Zechariah) and brings water to the surface, which produces this river that Ezeliel predicted.
So, tell me. how did Ezelkiel know about an underground river under Jerusalem?