John 14:7

Wherefore? Because "I came forth from the Father, and am come into the world" and, "I am the way: no man cometh unto the Father, but by me; " and, "No man can come to me, except the Father draw him; " and, "All things are delivered unto me by the Father; " and, "As the Father quickeneth (the dead), so also doth the Son; " and again, "If ye had known me, ye would have known the Father also." For in all these passages He had shown Himself to be the Father's Commissioner, through whose agency even the Father could be seen in His works, and heard in His words, and recognised in the Son's administration of the Father's words and deeds.

If ye had known Me, ye would have known My Father also. Some may perchance say and think that the Son is here speaking of His own accord, and at His own suggestion. But it is not so. For He never uttered anything in an uncalled-for, or merely casual way; though He does occasionally repeat Himself in a most instructive manner, especially because of the utter inability of some to follow His teaching. But in the present instance His words are most profitable to us in connection with what He had said just before. For when Thomas questioned Him, asking: "Whither wilt Thou depart; or how can we know the way, if we know not whither Thou wilt go?" He thereupon answered him most effectively in the words: I am the Way, and the Life, and the Truth; and again: No man cometh unto the Father but by Me; thereby showing that if any one willed to know the way which would lead to eternal life, he would strive with all diligence to know Christ. But since it was likely that some, who had been trained in Jewish rather than in Evangelic doctrine, might suppose that a confession of faith in and a knowledge of One Person only out of all was sufficient for a right belief, and that it was needless to learn the doctrine concerning the Holy and Consubstantial Trinity; Christ seems to absolutely exclude those who hold this opinion from a true knowledge concerning God, unless they would also accept Himself. For it is through the Son that we must draw near to God the Father. For in a manner analogous to our acceptance of the Offspring, we shall arrive at our belief in the Parent also. […]

(Hom. lxxiii. 2) If ye had known Me, He says, ye should have known My Father also; i. e. If ye had known My substance and dignity, ye would have known the Father's. They did know Him, but not as they ought to do. Nor was it till afterwards, when the Spirit came, that they were fully enlightened. On this account He adds, And from henceforth ye know Him, know Him, that is, spiritually. And have seen Him, i. e. by Me; meaning that he who had seen Him, had seen the Father. They saw Him, however, not in His pure substance, but clothed in flesh.

And from henceforth ye know Him, and have seen Him. Wonderful, it seems to me, is the gracious intention and the unspeakably profound purpose that underlies this saying also. For after having just said: If ye had known Me, ye would have known My Father also, and seeming thus to reproach His disciples for their ignorance of truths so essential, He immediately passes on to comfort them with the assurance: From henceforth ye know Him and have seen Him. For since they were destined to become rulers of the Churches throughout the world, in obedience to the Saviour's commission: Go ye and make disciples of all nations, for this reason above all others, as I think, He first utters a most useful truth of universal reference to all time, that whosoever knoweth the Son will most assuredly also know God the Father of Whom the Son is begotten; and then in His kindness He goes on to testify that His disciples possess this knowledge: not speaking at all by way of compliment, for He could never utter aught but truth, but inasmuch as they really knew Him and had most fully acknowledged Him. For that they knew and had believed that the Lord was really Son of God can by no means be a matter of doubt to right-minded persons. For how came it that Nathaniel the Israelite, when he heard Christ say: Before that Philip called thee, when thou wast under the fig-tree, I saw thee, immediately put forth his full confession of faith, saying: Rabbi, Thou art the Son of God, Thou art the King of Israel? Moreover, when the sea was marvellously and supernaturally calmed, how was it that those who were in the ship worshipped Him, saying: Truly Thou art the Son of God? Will any one maintain that this saying was uttered by men who did not know that He was God and begotten of God the Father? Surely such an one would give a most convincing proof of his want of intelligence. […]

If you had known me, you would certainly have known my Father also; because, as is said above in the tenth chapter, "I and the Father are one"; Matthew 11: "No one knows the Son except the Father, nor does anyone know the Father except …

How can our Lord say, If ye had known Me, ye should have known My Father also; when He has just said, Whither I go ye know, and the way ye know? We must suppose that some of them knew, and others not: among the latter, Thomas.

Then when he says, If you had known me, you would without doubt have known my Father also, he shows that the disciples knew both where he was going and the way. First, he shows this; secondly he resolves a coming difficulty. He does two …

Above He said that you "know" where I am going, and you know the Way, that is, Me; but here He says that "if" you "knew" Me, you would know My Father also. How can this be? There is no contradiction in His words. For …

Thomas had enquired both whither he went and what was the way, and Christ answers both these enquiries and makes good what he had said, that they would have needed no answer if they had understood themselves aright; for they knew him, and he was the way; they knew the Father, and he was the end; and therefore, whither I go you know, and the way you know.

Note, Many of the disciples of Christ have more knowledge and more grace than they think they have, and Christ takes notice of, and is well pleased with, that good in them which they themselves are not aware of; for those that know God do not all at once know that they know him, 1 John ii.

First, All that saw Christ in the flesh might have seen the Father in him, if Satan had not blinded their minds, and kept them from a sight of Christ, as the image of God, 2 Cor. iv. Secondly, All that saw Christ by faith did see the Father in him, though they were not suddenly aware that they did so.

If ye had known me,....

If ye had known me - By this Jesus does not intend to say that they were not truly his disciples, but that they had not a full and accurate knowledge of his character and designs. They still retained, to a large extent, the Jewish notions respecting a temporal Messiah, and did not fully understand that he was to die and be raised from the dead. Ye should have known my Father also - You would have known the counsels and designs of my Father respecting my death and resurrection.

We should mark in these verses how much better Jesus speaks of believers than they speak of themselves. He says to His disciples, "You know where I go, and you know the way." And yet Thomas at once breaks in with the remark, "We know neither the where nor the way." The apparent contradiction demands explanation. It is more seeming than real. Certainly, in one point of view, the knowledge of the disciples was very small.

He is "THE TRUTH" of all we find in the Father when we get to Him, "For in Him dwelleth all the fulness of the Godhead bodily" (Col 2:9), and He is all "THE LIFE" that shall ever flow to us and bless us from the Godhead thus approached and thus manifested in Him--"this is the true God and eternal life" (1Jo 5:20).

We should mark in these verses how much better Jesus speaks of believers than they speak of themselves. He says to His disciples, "You know where I go, and you know the way." And yet Thomas at once breaks in with the remark, "We know neither the where nor the way." The apparent contradiction demands explanation. It is more seeming than real. Certainly, in one point of view, the knowledge of the disciples was very small. They knew little before the crucifixion and resurrection compared to what they might have known, and little compared to what they afterwards knew after the day of Pentecost. About our Lord's purpose in coming into the world, about His sacrificial death and substitution for us on the cross, their ignorance was glaring and great. It might well be said, that they "knew in part" only, and were children in understanding. And yet, in another point of view, the knowledge of the disciples was very great. They knew far more than the great majority of the Jewish nation, and received truths which the Scribes and Pharisees entirely rejected. Compared to the world around them, they were in the highest sense enlightened. They knew and believed that their Master was the promised Messiah, the Son of the living God; and to know Him was the first step towards heaven. All things go by comparison. Before we lightly esteem the disciples because of their ignorance, let us take care that we do not underrate their knowledge. They knew more precious truth than they were aware of themselves. Their hearts were better than their heads. The plain truth is, that all believers are apt to undervalue the work of the Spirit in their own souls, and to fancy they know nothing because they do not know everything. Many true Christians are thought more of in heaven while they live, than they think of themselves, and will find it out to their surprise at the last day.

If ye had known me, ye should have known my Father - Because I and the Father are One, Joh 10:30. Or, if ye had properly examined the intention and design of the law, ye would have been convinced that it referred to me; and that all that I have done and instituted was according to the design and intention of the Father, as expressed in that law.