John 9:7

But he was sent to the pool which is called Siloam, i. e. he was baptized in Christ; and then he was enlightened. The Evangelist then explains to us the name of this pool: which is by interpretation, Sent: for, if He had not been sent, none of us would have been delivered from our sins.

He sent him to the pool which is called Siloam. But it was the evangelist's concern to call our attention to the name of this pool; and he adds, "Which is interpreted, Sent." You understand now who it is that was sent; for had He not been sent, none of us would have been set free from iniquity. Accordingly he washed his eyes in that pool which is interpreted, Sent-he was baptized in Christ. If, therefore, when He baptized him in a manner in Himself, He then enlightened him; when He anointed Him, perhaps He made him a catechumen.

Those who intend to gain any advantage from what they read, must not pass by even any small portion of the words; and on this account we are bidden to "search" the Scriptures, because most of the words, although at first sight easy, appear to have in their depth much hidden meaning. For observe of what sort is the present case. "Having said these words," It saith," He spat on the ground." What words? "That the glory of God should be made manifest," and that, "I must work the works of Him that sent Me." For not without a cause hath the Evangelist mentioned to us His words, and added that, "He spat," but to show that He confirmed His words by deeds. And why used He not water instead of spittle for the clay? He was about to send the man to Siloam: in order therefore that nothing might be ascribed to the fountain, but that thou mightest learn that the power proceeding from His mouth, the same both formed and opened the man's eyes, He "spat on the ground"; this at least the Evangelist signified, when he said, "And made clay of the spittle." Then, that the successful issue might not seem to be of the earth, He bade him wash. But wherefore did He not this at once, instead of sending him to Siloam? That thou mayest learn the faith of the blind man, and that the obstinacy of the Jews might be silenced: for it was probable that they would all see him as he departed, having the clay spread upon his eyes, since by the strangeness of the thing he would attract to himself all, both those who did and those who did not know him, and they would observe him exactly. And because it is not easy to recognize a blind man who hath recovered sight, He first maketh by the length of way many to be witnesses, and by the strangeness of the spectacle exact observers, that being more attentive they may no longer be able to say, "It is he: it is not he." Moreover, by sending him to Siloam, He desireth to prove that He is not estranged from the Law and the Old (Covenant), nor could it afterwards be feared that Siloam would receive the glory, since many who had often washed their eyes there gained no such benefit; for there also it was the power of Christ that wrought all. On which account the Evangelist addeth for us the interpretation of the name; for having said, "in Siloam," he addeth, "Which is, Sent." That thou mayest learn that there also it was Christ who healed him. As Paul saith, "They drank of that spiritual Rock that followed them, and that Rock was Christ." (1 Cor. x. 4.) As then Christ was the spiritual Rock, so also was He the spiritual Siloam. To me also the sudden coming in of the water seems to hint an ineffable mystery. What is that? The unlooked for (nature) of His appearance, beyond all expectation.

But observe the mind of the blind man, obedient in everything. He said not, "If it is really the clay or the spittle which gives me eyes, what need of Siloam? Or if there be need of Siloam, what need of the clay? Why did he anoint me? Why bid me wash?" But he entertained no such thoughts, he held himself prepared for one thing only, to obey in all things Him who gave the command, and nothing that was done offended him. If any one ask, "How then did he recover his sight, when he had removed the clay?" he will hear no other answer from us than that we know not the manner. And what wonder if we know it not, since not even the Evangelist knew, nor the very man that was healed? What had been done he knew, but the manner of doing it he could not comprehend. So when he was asked he said, that "He put clay upon mine eyes, and I washed, and do see"; but how this took place he cannot tell them, though they ask ten thousand times.