Charles H. Spurgeon on Psalms 46:4

Compared with the waterless deserts around, Judaea and Jerusalem were well watered, and drought pressed more severely on the besiegers than the besieged. The allusion here is to the well known rill and pool of Siloam. So in Isa 8:6, the blessing of God's protection is represented by the waters of Shiloah, which go softly. From "The psalms Chronologically arranged. By Four Friends," 1867.