Ephrem the Syrian : From the typological point of view this symbol has two meanings. The stream [wadi] of Elijah prefigures that, at the fullness of time, the Messiah will come and will send the sinners to the stream that comes out of the sanctuary, just like the one that Ezekiel saw. That is the stream that gives healing to the sick when its waters are applied. The [second meaning is that] the stream is the baptism of the Messiah. — ON THE FIRST BOOK OF KINGS 17:2