Concerning his own Son, etc. -- This is a remarkable passage, by which we are taught that the whole gospel is included in Christ, so that if any removes one step from Christ, he withdraws himself from the gospel. For since he is the living and express image of the Father, it is no wonder, that he alone is set before us as one to whom our whole faith is to be directed and in whom it is to center. It is then a definition of the gospel, by which Paul expresses what is summarily comprehended in it. I have rendered the words which follow, Jesus Christ our Lord, in the same case; which seems to me to be most agreeable with the context. We hence learn, that he who has made a due proficiency in the knowledge of Christ, has acquired every thing which can be learned from the gospel; and, on the other hand, that they who seek to be wise without Christ, are not only foolish, but even completely insane. Who was made, etc. -- Two things must be found in Christ, in order that we may obtain salvation in him, even divinity and humanity. His divinity possesses power, righteousness, life, which by his humanity are conveyed to us. Hence the Apostle has expressly mentioned both in the Summary he gives of the gospel, that Christ was manifested in the flesh -- and that in it he declared himself to be the Son of God. So John says; after having declared that the Word was made flesh, he adds, that in that flesh there was a glory as of the only-begotten Son of God. (John 1:14.) That he specially notices the descent and lineage of Christ from his ancestor David, is not superfluous; for by this he calls back our attention to the promise, that we may not doubt but that he is the very person who had been formerly promised. So well known was the promise made to David, that it appears to have been a common thing among the Jews to call the Messiah the Son of David. This then -- that Christ did spring from David -- was said for the purpose of confirming our faith. He adds, according to the flesh; and he adds this, that we may understand that he had something more excellent than flesh, which he brought from heaven, and did not take from David, even that which he afterwards mentions, the glory of the divine nature. Paul does further by these words not only declare that Christ had real flesh, but he also clearly distinguishes his human from his divine nature; and thus he refutes the impious raving of Servetus, who assigned flesh to Christ, composed of three untreated elements.

Concerning his Son - This is connected with the first verse, with the word "gospel." The gospel of God concerning his Son. The design of the gospel was to make a communication relative to his Son Jesus Christ. This is the whole of it. There is no "good news" to man respecting salvation except what comes by Jesus Christ.
Which was made - The word translated "was made" means usually "to be," or "to become." It is used, however, in the sense of being born. Thus, Galatians 4:4, "God sent forth his Son made of a woman," born of a woman. John 8:58, "before Abraham was (born), I am." In this sense it seems to be used here, who was born, or descended from the seed of David.
Of the seed of David - Of the posterity or lineage of David. He was a descendant of David. David was perhaps the most illustrious of the kings of Israel. The promise to him was that there should not fail a man to sit on this throne; 1-Kings 2:4; 1-Kings 8:25; 1-Kings 9:5; 2-Chronicles 6:16. This ancient promise was understood as referring to the Messiah, and hence, in the New Testament he is called the descendant of David, and so much pains is taken to show that he was of his line; Luke 1:27; Matthew 9:27; Matthew 15:22; Matthew 12:23; Matthew 21:9, Matthew 21:15; Matthew 22:42, Matthew 22:45; John 7:42; 2-Timothy 2:8. As the Jews universally believed that the Messiah would be descended from David John 7:42, it was of great importance for the sacred writers to make it out clearly that Jesus of Nazareth was of that line and family. Hence, it happened, that though our Saviour was humble, and poor, and obscure, yet he had that on which no small part of the world have been accustomed so much to pride themselves, an illustrious ancestry. To a Jew there could be scarcely any honor so high as to be descended from the best of their kings; and it shows how little the Lord Jesus esteemed the honors of this world, that he could always evince his deep humility in circumstances where people are usually proud; and that when he spoke of the honors of this world, and told how little they were worth, he was not denouncing what was not within his reach.
According to the flesh - The word "flesh," σάρξ sarx, is used in the Scriptures in a great variety of significations.
(1) it denotes, as with us, the flesh literally of any living being; Luke 24:39, "A spirit hath not flesh and bones," etc.
(2) the animal system, the body, including flesh and bones, the visible part of man, in distinction from the invisible, or the soul; Acts 2:31, "Neither did his flesh (his body) "see corruption." 1-Corinthians 5:5; 1-Corinthians 15:39.
(3) the man, the whole animated system, body and soul; Romans 8:3, "In the likeness of sinful flesh. 1-Corinthians 15:50; Matthew 16:17; Luke 3:6.
(4) human nature. As a man. Thus, Acts 2:30, "God hath sworn with an oath that of the fruit of his loins according to the flesh, that is, in his human nature, he would raise up Christ to sit on his throne." Romans 9:5, "whose are the fathers, and of whom, as concerning the flesh, Christ came, who is over all, God blessed forever." The same is its meaning here. He was a descendant of David in his human nature, or as a man. This implies, of course, that he had another nature besides his human, or that while he was a man he was also something else; that there was a nature in which he was not descended from David.
That this is its meaning will still further appear by the following observations.
(1) the apostle expressly makes a contrast between his condition according to the flesh, and that according to the spirit of holiness.
(2) the expression "according to the flesh" is applied to no other one in the New Testament but to Jesus Christ. Though the word "flesh" often occurs, and is often used to denote man, yet the special expression, "according to the flesh" occurs in no other connection.
In all the Scriptures it is never said of any prophet or apostle, any lawgiver or king, or any man in any capacity, that he came in the flesh, or that he was descended from certain ancestors according to the flesh. Nor is such an expression ever used any where else. If it were applied to a mere man, we should instantly ask in what other way could he come than in the flesh? Has he a higher nature? Is he an angel, or a seraph? The expression would be unmeaningful. And when, therefore, it is applied to Jesus Christ, it implies, if language has any meaning, that there was a sense in which Jesus was not descended from David. What that was, appears in the next verse.

Concerning his Son - That is, the Gospel relates every thing concerning the conception, birth, preaching, miracles, passion, death, resurrection, and ascension of Jesus Christ, who was of the seed-royal, being, as far as his humanity was considered, the son of David, and then the only rightful heir to the Israelitish throne.

(3) Concerning his (d) Son Jesus Christ our Lord, which was (e) made of the seed of David (f) according to the flesh;
(3) By declaring the sum of the doctrine of the Gospel, he stirs up the Romans to consider well the matter about which he is entreating them: so then he shows that Christ (who is the very substance and sum of the gospel) is the only Son of God the Father, who with regard to his humanity is born of the seed of David, but with regard to his divine and spiritual nature, by which he sanctified himself, is begotten of the Father from everlasting, as also manifestly appears by his mighty resurrection.
(d) This is a plain testimony of the person of Christ, that he is but one, and also a testimony of his two natures, and their properties.
(e) Who received flesh from the virgin who was David's daughter.
(f) As he is man: for this word "flesh", by the figure of speech synecdoche, is taken for man.

Concerning his Son Jesus Christ our Lord,.... These words are in connection with "the Gospel of God", Romans 1:1, and express the subject matter of it, the Son of God, Jesus Christ our Lord; for Christ, as the Son of God, the Saviour of sinners, the only Mediator between God and men, who is Lord both of the dead and living, is the sum and substance of the Gospel: he is here described by his relation to God, his Son, of the same nature with him, equal to him, and distinct from him; by his usual names, "Jesus Christ", the one signifying a "Saviour", the other "anointed", and both, that he was anointed of God to be the Saviour of his people; and by his dominion over the saints our Lord, not merely by creation, but by redemption and grace, and happy is the person that can claim interest in him, as is here done; and by the distinction of natures in him:
which was made of the seed of David according to the flesh; this respects Christ in his human nature, who was made flesh, and of a woman; and shows his existence before his incarnation, and the immediate power and hand of God in it; and which was done, not by transmutation of him into flesh, but by an assumption of human nature into union with his divine person: he is said to be made "of the seed of David"; this points out the family from whence he sprung; designs the posterity of David, particularly Mary; has regard to the promise made to David, which God fulfilled; and shows the royal descent of Christ: it is added, "according to the flesh"; that is, according to his human nature; which phrase does not denote the corruption, but the truth of that nature; and supposes that he had another nature, otherwise there would have been no need of this limiting and restrictive clause.

Concerning his Son Jesus Christ our Lord--the grand burden of this "Gospel of God."
made of the seed of David--as, according to "the holy scriptures," He behooved to be. (See on Matthew 1:1).
according to the flesh--that is, in His human nature (compare Romans 9:5; John 1:14); implying, of course, that He had another nature, of which the apostle immediately proceeds to speak.

Who was of the seed of David according to the flesh - That is, with regard to his human nature. Both the natures of our Saviour are here mentioned; but the human is mentioned first, because the divine was not manifested in its full evidence till after his resurrection.