John 8:31

Beloved, our condition needs much endurance; and endurance is produced when doctrines are deeply rooted. For as no wind is able by its assaults to tear up the oak, which sends down its root into the lower recesses of the earth, and is firmly clenched there; so too the soul which is nailed by the fear of God none will be able to overturn. Since to be nailed is more than to be rooted. Thus the Prophet prayeth, saying, "Nail my flesh by Thy fear"; "do Thou so fix and join me, as by a nail riveted into me." For as men of this kind are hard to be captured, so the opposite sort are a ready prey, and are easily thrown down. As was the case of the Jews at that time; for after having heard and believed, they again turned out of the way. Christ therefore desiring to deepen their faith that it might not be merely superficial, diggeth into their souls by more striking words. For it was the part of believers to endure even reproofs, but they immediately were wroth. But how doth He this? He first telleth them, "If ye continue in My word, ye are My disciples indeed: and the truth shall make you free." All but saying, "I am about to make a deep incision, but be not ye moved"; or rather by these expressions He allayed the pride of their imagination. "Shall make you free": from what, tell me? From your sins.

They believed then, yet not as they ought, but carelessly and as it were by chance, being pleased and refreshed by the humility of the words. For that they had not perfect faith the Evangelist shows by their speeches after this, in which they insult Him again. And that these are the very same persons he has declared by saying, "Then said Jesus to those Jews which believed on Him, If ye continue in My word." Showing that they had not yet received His doctrine, but only gave heed unto His words. Wherefore He speaketh more sharply. Before He merely said, "Ye shall seek Me", but now He addeth what is more, "Ye shall die in your sins." And He showeth how; "because ye cannot when ye are come to that place afterwards entreat Me."

"If ye continue in My word," was the expression of One declaring what was in their heart, and knowing that they had indeed believed, but had not continued. And He promiseth a great thing, that they should become His disciples. For since some had gone away from Him before this, alluding to them He saith, "If ye continue," because they also had heard and believed, and departed because they could not continue. For "many of His disciples went back, and walked no more openly with Him." "Ye shall know the truth," that is, "shall know Me, for I am the truth. All the Jewish matters were types, but ye shall know the truth from Me, and it shall free you from your sins." As to those others He said, "Ye shall die in your sins," so to these He saith, "shall make you free." He said not, "I will deliver you from bondage," this He allowed them to conjecture.

Of what follows of the previous lesson, and has been read publicly to us to-day from the holy Gospel, I then deferred speaking, because I had already said much, and of that liberty into which the grace of the Saviour calleth us it was needful to treat in no cursory or negligent way. For those to whom the Lord Jesus Christ was speaking were Jews: in a large measure indeed His enemies, but also in some measure already become, and yet to be, His friends; for some He saw there, as we have already said, who should yet believe after His passion. Looking to these, He had said, "When ye have lifted up the Son of man, then shall ye know that I am [He]." There also were those who, when He so spake, straightway believed. To them He spake what we have heard to-day: "Then said Jesus to those Jews who believed on Him, If ye continue in my word, ye shall be my disciples indeed." By continuing ye shall be so; for as now ye are believers, by so continuing ye shall be beholders. Hence there follows, "And ye shall know the truth." The truth is unchangeable. The truth is bread, which refreshes our minds and fails not; changes the eater, and is not itself changed into the eater. The truth itself is the Word of God, God with God, the only-begotten Son. This Truth was for our sake clothed with flesh, that He might be born of the Virgin Mary, and the prophecy fulfilled, "Truth has sprung from the earth." This Truth then, when speaking to the Jews, lay hid in the flesh. But He lay hid not in order to be denied, but to be deferred [in His manifestation]; to be deferred, in order to suffer in the flesh; and to suffer in the flesh, in order that flesh might be redeemed from sin. And so our Lord Jesus Christ, standing full in sight as regards the infirmity of flesh, but hid as regards the majesty of Godhead, said to those who had believed on Him, when He so spake, "If ye continue in my word, ye shall be my disciples indeed." For he that endureth to the end shall be saved. "And ye shall know the truth," which now is hid from you, and speaks to you. "And the truth shall free you."

"Then said the Lord to those Jews who believed on Him, If ye continue in my word." "Continue," I say, for you are now initiated and have begun to be there. "If ye continue," that is, in the faith which is now begun in you who believe, to what will you attain? See the nature of the beginning, and whither it leads. You have loved the foundation, give heed to the summit, and out of this low condition seek that other elevation. For faith has humility, but knowledge and immortality and eternity possess not lowliness, but loftiness; that is, upraising, all-sufficiency, eternal stability, full freedom from hostile assault, from fear of failure. That which has its beginning in faith is great, but is despised. In a building also the foundation is usually of little account with the unskilled. A large trench is made, and stones are thrown in every way and everywhere. No embellishment, no beauty are apparent there; just as also in the root of a tree there is no appearance of beauty. And yet all that delights you in the tree has sprung from the root. You look at the root and feel no delight: you look at the tree and admire it. Foolish man! what you admire has grown out of that which gave you no delight. The faith of believers seems a thing of little value,-you have no scales to weigh it. Hear then to what it attains, and see its greatness: as the Lord Himself says in another place, "If ye have faith as a grain of mustard seed." What is there of less account than that, yet what is there pervaded with greater energy? What more minute, yet what more fervidly expansive? And so "ye" also, He says, "if ye continue in my word," wherein ye have believed, to what will ye be brought? "ye shall be my disciples indeed." And what does that benefit us? "and ye shall know the truth."