The conversation between our Lord and the Jews, which begins with these verses, is full of difficulties. The connection between one part and another, and the precise meaning of some of the expressions which fell from our Lord’s lips, are “things hard to be understood.” In passages like this it is true wisdom to acknowledge the great imperfection of our spiritual vision, and to be thankful if we can glean a few handfuls of truth.

Let us notice, for one thing, in these verses, what the Lord Jesus says of Himself. He proclaims, “I am the light of the world.”

These words imply that the world needs light, and is naturally in a dark condition. It is so in a moral and spiritual point of view: and it has been so for nearly 6,000 years. In ancient Egypt, Greece, and Rome, in modern England, France, and Germany, the same report is true. The vast majority of men neither see nor understand the value of their souls, the true nature of God, nor the reality of a world to come! Notwithstanding all the discoveries of art and science, “darkness still covers the earth, and gross darkness the people.” (Isaiah. 60:2)

The narrative which begins the eighth chapter of John’s Gospel is of a rather peculiar character. In some respects it stands alone. There is nothing quite like it in the whole range of the four Gospels. In every age some scrupulous minds have stumbled at the passage, and have doubted whether it was ever written by John at all. But the justice of such scruples is a point that cannot easily be proved.

To suppose, as some have thought, that the narrative before us palliates the sin of adultery, and exhibits our Lord as making light of the seventh commandment, is surely a great mistake. There is nothing in the passage to justify such an assertion. There is not a sentence in it to warrant our saying anything of the kind. Let us calmly weigh the matter, and examine the contents of the passage.

These verses show us, for one thing, how useless is knowledge in religion, if it is not accompanied by grace in the heart. We are told that some of our Lord’s hearers knew clearly where Christ was to be born. They referred to Scripture, like men familiar with its contents. “Hath not the Scripture said that Christ comes of the seed of David, and out of the town of Bethlehem, where David was?” And yet the eyes of their understanding were not enlightened. Their own Messiah stood before them, and they neither received, nor believed, nor obeyed Him.

A certain degree of religious knowledge, beyond doubt, is of vast importance. Ignorance is certainly not the mother of true devotion, and helps nobody toward heaven. An “unknown God” can never be the object of a reasonable worship. Happy indeed would it be for Christians if they all knew the Scriptures as well as the Jews seem to have done when our Lord was on earth!

It has been said that there are some passages in Scripture which deserve to be printed in letters of gold. Of such passages the verses before us form one. They contain one of those wide, full, free invitations to mankind, which make the Gospel of Christ so eminently the “good news of God.” Let us see of what it consists.

We have, first, in these verses, a case supposed. The Lord Jesus says, “If any man thirst.” These words no doubt were meant to have a spiritual meaning. The thirst before us is of a purely spiritual kind. It means anxiety of soul,–conviction of sin,–desire of pardon,–longing after peace of conscience. When a man feels his sins, and wants forgiveness–is deeply sensible of his soul’s need, and earnestly desires help and relief–then he is in that state of mind which our Lord had in view, when he said, “If any man thirst.” The Jews who heard Peter preach on the day of Pentecost, and were “pricked in their hearts,”–the Philippian jailer who cried to Paul and Silas, “What must I do to be saved?” are both examples of what the expression means. In both cases there was “thirst.”

We see in these verses, the obstinate blindness of the unbelieving Jews. We find them defending their denial of our Lord’s Messiahship, by saying, “We know this man whence He is: but when Christ cometh no man knoweth whence He is.” And yet in both these assertions they were wrong!

They were wrong in saying that they “knew whence our Lord came.” They meant no doubt to say that He was born at Nazareth, and belonged to Nazareth, and was therefore a Galilean. Yet the fact was, that our Lord was born at Bethlehem, that He belonged legally to the tribe of Judah, and that His mother and Joseph were of the house and lineage of David. It is incredible to suppose that the Jews could not have found this out, if they had honestly searched and inquired. It is notorious that pedigrees, genealogies, and family histories were most carefully kept by the Jewish nation. Their ignorance was without excuse.

We learn first in this passage, that honest obedience to God’s will is one way to obtain clear spiritual knowledge. Our Lord says, “If any man will do His will, he shall know of the doctrine, whether it be of God, or whether I speak of myself.”

The difficulty of finding out “what is truth” in religion is a common subject of complaint among men. They point to the many differences which prevail among Christians on matters of doctrine, and profess to be unable to decide who is right. In thousands of cases this professed inability to find out truth becomes an excuse for living without any religion at all.

The chapter we now begin is divided from the preceding one by a wide interval of time. The many miracles which our Lord wrought, while He “walked in Galilee,” are passed over by John in comparative silence. The events which he was specially inspired to record are those which took place in or near Jerusalem.

We should observe in this passage the desperate hardness and unbelief of human nature. We are told that even our Lord’s “brethren did not believe in Him.” Holy and harmless and blameless as He was in life, some of his nearest relatives, according to the flesh, did not receive Him as the Messiah. It was bad enough that His own people, “the Jews, sought to kill Him.” But it was even worse that “His brethren did not believe.”

That great Scriptural doctrine, man’s need of preventing and converting grace, stands out here, as if written with a sunbeam. It becomes all who question that doctrine to look at this passage and consider. Let them observe that seeing Christ’s miracles, hearing Christ’s teaching, living in Christ’s own company, were not enough to make men believers. The mere possession of spiritual privileges never yet made any one a Christian. All is useless without the effectual and applying work of God the Holy Ghost. No wonder that our Lord said in another place, “No man can come to Me, except the Father which hath sent Me draw him.” (John 6:44)

These verses form a sorrowful conclusion to the famous discourse of Christ which occupies the greater part of the sixth chapter. They supply a melancholy proof of the hardness and corruption of man’s heart. Even when the Son of God was the preacher, many seem to have heard in vain.

Let us mark, in this passage, what an old sin backsliding is. We read that when our Lord had explained what He meant by “eating and drinking His flesh and blood,” “From that time many went back and walked no more with Him.”

The true grace of God no doubt is an everlasting possession. From this men never fall away entirely, when they have once received it. “The foundation of God standeth sure.” “My sheep shall never perish.” (2 Tim. 2:19; John 10:28) But there is counterfeit grace and unreal religion in the Church, wherever there is true; and from counterfeit grace thousands may and do fall away. Like the stony ground hearers, in the parable of the sower, many “have no root in themselves, and so in time of temptation fall away.” All is not gold that glitters. All blossoms do not come to fruit. All are not Israel which are called Israel. Men may have feelings, desires, convictions, resolutions, hopes, joys, sorrows in religion, and yet never have the grace of God. They may run well for a season, and bid fair to reach heaven, and yet break down entirely after a time, go back to the world, and end like Demas, Judas Iscariot, and Lot’s wife.

We learn from these verses that some of Christ’s sayings seem hard to flesh and blood. We are told that “many” who had followed our Lord for a season, were offended when He spoke of “eating His flesh and drinking His blood.” They murmured and said, “This is an hard saying: who can hear it?”

Murmurs and complaints of this kind are very common. It must never surprise us to hear them. They have been, they are, they will be as long as the world stands. To some Christ’s sayings appear hard to understand. To others, as in the present case, they appear hard to believe, and harder still to obey. It is just one of the many ways in which the natural corruption of man shows itself. So long as the heart is naturally proud, worldly, unbelieving, and fond of self-indulgence, if not of sin, so long there will never be wanting people who will say of Christian doctrines and precepts, “These are hard sayings: who can hear them?”

Few passages of Scripture have been so painfully twisted and perverted as that which we have now read. The Jews are not the only people who have striven about its meaning. A sense has been put upon it which it was never intended to bear. Fallen man, in interpreting the Bible, has an unhappy aptitude for turning meat into poison. The things that were written for his benefit, he often makes an occasion for falling.

Let us first consider carefully, what these verses do not mean. The “eating and drinking” of which Christ speaks do not mean any literal eating and drinking. Above all, the words were not spoken with any reference to the Sacrament of the Lord’s Supper. We may eat the Lord’s Supper, and yet not eat and drink Christ’s body and blood. We may eat and drink Christ’s body and blood, and yet not eat the Lord’s Supper. Let this never be forgotten.