You worship what you know not, we worship what we know. This is a sentence worthy of being remembered, and teaches us that we ought not to attempt any thing in religion rashly or at random; because, unless there be knowledge, it is not God that we worship, but a phantom or idol. All good intentions, as they are called, are struck by this sentence, as by a thunderbolt; for we learn from it, that men can do nothing but err, when they are guided by their own opinion without the word or command of God. For Christ, defending the person and cause of his nation, shows that the Jews are widely different from the Samaritans. And why? Because salvation is from the Jews. By these words he means that they have the superiority in this respect, that God had made with them a covenant of eternal salvation. Some restrict it to Christ, who was descended from the Jews; and, indeed, since all the promises of God were confirmed and ratified in him, (2-Corinthians 1:20,) there is no salvation but in him. But as there can be no doubt that Christ gives the preference to the Jews on this ground, that they do not worship some unknown deity, but God alone, who revealed himself to them, and by whom they were adopted as his people; by the word salvation we ought to understand that saving manifestation which had been made to them concerning the heavenly doctrine. But why does he say that it was from the Jews, when it was rather deposited with them, that they alone might enjoy it? He alludes, in my opinion, to what had been predicted by the Prophets, that the Law would go forth from Zion, (Isaiah 2:3; Micah 4:2,) for they were separated for a time from the rest of the nations on the express condition, that the pure knowledge of God should flow out from them to the whole world. It amounts to this, that God is not properly worshipped but by the certainty of faith, which cannot be produced in any other way than by the word of God. Hence it follows that all who forsake the word fall into idolatry; for Christ plainly testifies that an idol, or an imagination of their own brain, is substituted for God, when men are ignorant of the true God; and he charges with ignorance all to whom God has not revealed himself, for as soon as we are deprived of the light of his word, darkness and blindness reign. It ought to be observed that the Jews, when they had treacherously set aside the covenant of eternal life which God had made with their fathers, were deprived of the treasure which they had till that time enjoyed; for they had not yet been driven out of the Church of God. Now that they deny the Son, they have nothing in common with the Father; for whosoever denieth the Son hath not the Father, (1 John 2:23.) The same judgment must be formed concerning all who have turned aside from the pure faith of the Gospel to their own inventions and the traditions of men. Although they who worship God according to their own judgment or human traditions flatter and applaud themselves in their obstinacy, this single word, thundering from heaven, lays prostrate all that they imagine to be divine and holy, You worship what you do not know It follows from this that, if we wish our religion to be approved by God, it must rest on knowledge obtained from His word.

Ye worship ye know not what - This probably refers to the comparative ignorance and corruption of the Samaritan worship. Though they received the five books of Moses, yet they rejected the prophets, and of course all that the prophets had said respecting the true God. Originally, also, they had joined the worship of idols to that of the true God. See 2-Kings 17:26-34. They had, moreover, no authority for building their temple and conducting public worship by sacrifices there. On all these accounts they were acting in an unauthorized manner. They were not obeying the true God, nor offering the worship which he had commanded or would approve. Thus, Jesus indirectly settled the question which she had proposed to him, yet in such a way as to show her that it was of much less importance than she had supposed.
We know - We Jews. This they knew because God had commanded it; because they worshipped in a place appointed by God, and because they did it in accordance with the direction and teaching of the prophets.
Salvation is of the Jews - They have the true religion and the true form of worship; and the Messiah, who will bring salvation, is to proceed from them. See Luke 2:30; Luke 3:6. Jesus thus affirms that the Jews had the true form of the worship of God. At the same time he was sensible how much they had corrupted it, and on various occasions reproved them for it.

Ye worship ye know not what - The Samaritans believed in the same God with the Jews; but, as they rejected all the prophetical writings, they had but an imperfect knowledge of the Deity: besides, as they incorporated the worship of idols with his worship, they might be justly said to worship him whom they did not properly know. See the account of their motley worship, 2-Kings 17:26-34. But after Sanballat had built the temple on Mount Gerizim, the idolatrous worship of the Cutheans and Sepharvites, etc., was entirely laid aside; the same religious service being performed in the Samaritan temple which was performed in that at Jerusalem.
We know what we worship - We Jews acknowledge all the attributes of his nature, and offer to him only the sacrifices prescribed in the law.
Salvation is of the Jews - Εκ των Ιουδαιων εστιν, Salvation is from the Jews. Salvation seems here to mean the Savior, the Messiah, as it does Luke 2:30; Acts 4:12 : and so the woman appears to have understood it, John 4:25. The Messiah was to spring from the Jews - from them, the preaching of the Gospel, and the knowledge of the truth, were to go to all the nations of the world. It was to the Jews that the promises were made; and it was in their prophetic Scriptures, which the Samaritans rejected, that Jesus Christ was proclaimed and described. See Isaiah 11:3.

Ye worship ye know not what,.... However, as to her question, he more directly replies by condemning the Samaritans, and their ignorance in worship, and by approving the Jews; and so manifestly gives the preference to the Jews, not only with respect to the place, and object of worship, but with respect to knowledge and salvation. As for the Samaritans, he suggests, that they were ignorant, not only of the true object of worship, but knew not what they themselves worshipped; or, at least, were not agreed in it. The original inhabitants of those parts, from whence these Samaritans sprung, were idolatrous Heathens, placed by the king of Assyria in the room of the ten tribes he carried away captive; and these feared not the Lord, for they "knew not the manner of the God of the land": wherefore lions were sent among them which slew many of them; upon which the king of Assyria ordered a priest to be sent to instruct them: but notwithstanding this, they had everyone gods of their own, some one, and some another; and so served divers graven images, they and their children, and their children's children, to the time of the writer of the Book of Kings; see 2-Kings 17:24. And though after Manasseh, and other Jews were come among them, and they had received the law of Moses, they might have some knowledge of the true God, yet they glorified him not as God; and though they might in words profess him, yet in works they denied him; and even after this they are very highly charged by the Jews with idolatrous practices on this mount. Sometimes they say (g) the Cuthites, or Samaritans, worshipped fire; and at other times, and which chiefly prevails with them, they assert (h), that their wise men, upon searching, found that they worshipped the image of a dove on Mount Gerizim; and sometimes they say (i), they worshipped the idols, the strange gods, or Teraphim, which Jacob hid under the oak in Sichem; which last, if true, may serve to illustrate these words of Christ, that they worshipped they knew not what, since they worshipped idols hid in the mount.
"R. Ishmael bar Jose, they say (k) went to Neapolis, (Sichem, called Naplous,) the Cuthites, or Samaritans came to him (to persuade him to worship with them in their mountain); he said unto them, I will show you that ye do not "worship at this mountain", but "the images which are hid under it"; for it is written, Genesis 35:4; "and Jacob hid them" under the oak which was by Shechem.''
And elsewhere (l) it is reported of the same Rabbi, that he went to Jerusalem to pray, as before related on John 4:20, and after what passed between him, and the Samaritan he met with at Mount Gerizim, before mentioned, he added;
"and said to him, I will tell you what ye are like, (ye are like) to a dog that lusts after carrion; so because ye know the idols are hid under it, (the mountain,) as it is written, Genesis 35:4 and Jacob hid them, therefore ye lust after it: they said--this man knows that idols are hid here, and perhaps he will take them away; and they consulted together to kill him: he arose, and made his escape in the night.''
But this was not the case of the Jews:
we know what we worship; Christ puts himself among them, for he was a Jew, as the woman took him to be; and, as man, was a worshipper of God; he feared, loved, and obeyed God; he trusted in him, and prayed unto him; though, as God, he was the object of worship himself: and the true worshippers among the Jews, of which sort Christ was, knew God, whom they worshipped, spiritually and savingly; and the generality of that people had right notions of the God of Israel, having the oracles, and service of God, and being instructed out of Moses, and the prophets:
for salvation is of the Jews; the promises of salvation, and of a Saviour, were made to them, when the Gentiles were strangers to them; the means of salvation, and of the knowledge of it, as the word, statutes, and ordinances, were enjoyed by them, when others were ignorant of them; and the Messiah, who is sometimes styled "Salvation", see Genesis 49:18, was not only prophesied of in their books, and promised unto them, but came of them, as well as to them; and the number of the saved ones had been for many hundreds of years, and still was among them; the line of election ran among them, and few among the Gentiles were called and saved, as yet.
(g) T. Bab. Taanith, fol. 5. 2. (h) Maimon. in Misn. Beracot, c. 8. sect. 8. & Bartenora in ib. c. 7. sect. 1. & in Nidda, c. 4. sect. 1. (i) Shalshelet Hakkabala, fol. 15. 2. (k) T. Hieros. Avoda Zara, fol. 44. 4. (l) Bereshit Rabba, sect. 81. fol. 71. 1.

Ye worship ye know not what--without any revealed authority, and so very much in the dark. In this sense, the Jews knew what they were about. But the most glorious thing here is the reason assigned,
for salvation is of the Jews--intimating to her that Salvation was not a thing left to be reached by any one who might vaguely desire it of a God of mercy, but something that had been revealed, prepared, deposited with a particular people, and must be sought in connection with, and as issuing from them; and that people, "the Jews."

Salvation is of the Jews. In the controversy between the Jews and Samaritans, the former were right on the great issue. The Samaritans worshiped, but knew not what they worshiped, because they rejected the prophets who would have directed them.

Ye worship ye know not what - Ye Samaritans are ignorant, not only of the place, but of the very object of worship. Indeed, they feared the Lord after a fashion; but at the same time served their own gods, 2-Kings 17:33. Salvation is from the Jews - So spake all the prophets, that the Saviour should arise out of the Jewish nation: and that from thence the knowledge of him should spread to all nations under heaven.