And said unto him, Go, wash in the pool of Siloam, (which is by interpretation, Sent.) He went his way therefore, and washed, and came seeing. Siloam - Called also Shiloah, Silos, or Siloa, was a fountain under the walls of Jerusalem, towards the east, between the city and the brook Kidron. Calmet thinks that this was the same with En-rogel, or the fuller's fountain, which is mentioned in Joshua 15:7; Joshua 18:16; in 2 Samuel 17:17; and in 1 Kings 1:9. Its waters were collected in a great reservoir for the use of the city; and a stream from it supplied the pool of Bethesda.
By interpretation, Sent - From the Hebrew שלח shalach, he sent: either because it was looked upon as a gift sent from God, for the use of the city; or because its waters were directed or sent by canals or pipes, into different quarters, for the same purpose. Some think there is an allusion here to Genesis 49:10; that this fountain was a type of Shiloh, the Christ, the Sent of God; and that it was to direct the man's mind to the accomplishment of the above prophecy that our Lord sent him to this fountain. This supposition does not appear very solid. The Turks have this fountain still in great veneration, and think the waters of it are good for diseases of the eyes. Lightfoot says that the spring of Siloam discharged itself by a double stream into a twofold pool - the upper was called שילוח shiloach - the lower שלח shelach; the one signifying απεϚαλμενος, sent, the latter, κωδιων fleeces; and that our Lord marked this point so particularly, to inform the blind man that it was not to Shelach, but to Shiloach, that he must go to wash his eyes. These two pools seem to be referred to in Isaiah 7:23; Isaiah 22:9.