Romans, Chapter 2, verses 28-29
25 whom their circumcision shall not profit if they keep not the LawRomans, Chapter 3, verses 1-18
1 The Jews' prerogative, 3 which they have not lost, 9 howbeit the Law convinceth them also of sin3
3:1 What then, may some say, is the advantage of the Jew, or of the circumcision - That is, those that are circumcised, above the gentiles?
3:2 Chiefly in that they were intrusted with the oraclesof God - The scriptures, in which are so great and precious promises. Other prerogatives will follow, Rom 9:4-5. St. Paul here singles out this by which, after removing the objection, he will convict them so much the more.
3:3 Shall their unbelief disannul the faithfulness of God - Will he not still make good his promises to them that do believe?
3:4 Psa 2:4.
3:5 But, it may be farther objected, if our unrighteousness be subservient to God's glory, is it not unjust in him to punish us for it? I speak as a man - As human weakness would be apt to speak.
3:6 God forbid - By no means. If it were unjust in God to punish that unrighteousness which is subservient to his own glory, how should God judge the world - Since all the unrighteousness in the world will then commend the righteousness of God.
3:7 But, may the objector reply, if the truth of God hath abounded - Has been more abundantly shown. Through my lie - If my lie, that is, practice contrary to truth, conduces to the glory of God, by making his truth shine with superior advantage. Why am I still judged as a sinner - Can this be said to be any sin at all? Ought I not to do what would otherwise be evil, that so much "good may come?" To this the apostle does not deign to give a direct answer, but cuts the objector short with a severe reproof.
3:8 Whose condemnation is just - The condemnation of all who either speak or act in this manner. So the apostle absolutely denies the lawfulness of " doing evil," any evil, "that good may come."
3:9 What then - Here he resumes what he said, Rom 3:1. Under sin - Under the guilt and power of it: the Jews, by transgressing the written law; the gentiles, by transgressing the law of nature.
3:10 As it is written - That all men are under sin appears from the vices which have raged in all ages. St. Paul therefore rightly cites David and Isaiah, though they spoke primarily of their own age, and expressed what manner of men God sees, when he "looks down from heaven;" not what he makes them by his grace. There is none righteous - This is the general proposition. The particulars follow: their dispositions and designs, Rom 3:11-12; their discourse, Rom 3:13-14; their actions, Rom 3:16-18. Psa 14:1, etc
3:11 There is none that understandeth - The things of God.
3:12 They have all turned aside - From the good way.They are become unprofitable - Helpless impotent, unable to profit either themselves or others.
3:13 Their throat - Is noisome and dangerous as an open sepulchre. Observe the progress of evil discourse, proceeding out of the heart, through the throat, tongue, lips, till the whole mouth is filled therewith. The poison of asps - Infectious, deadly backbiting, tale - bearing, evil - speaking,is under (for honey is on) their lips. An asp is a venomous kind of serpent. Psa 5:9; Psa 140:3.
3:14 Cursing - Against God. Bitterness - Against their neighbour. Psa 10:7.
3:15 Isa 59:7-8
3:17 Of peace - Which can only spring from righteousness.
3:18 The fear of God is not before their eyes - Much less is the love of God in their heart. Psa 36:1.
Matthew, Chapter 6, verses 31-34
25 exhorteth not to be careful for worldly things, 33 but to seek God's kingdom6
6:31 Therefore take not thought - How kind are these precepts! The substance of which is only this, Do thyself no harm! Let us not be so ungrateful to him, nor so injurious to ourselves, as to harass and oppress our minds with that burden of anxiety, which he has so graciously taken off. Every verse speaks at once to the understanding, and to the heart. We will not therefore indulge these unnecessary, these useless, these mischievous cares. We will not borrow the anxieties and distresses of the morrow, to aggravate those of the present day. Rather we will cheerfully repose ourselves on that heavenly Father, who knows we have need of these things; who has given us the life, which is more than meat, and the body, which is more than raiment.And thus instructed in the philosophy of our heavenly Master, we will learn a lesson of faith and cheer. fulness from every bird of the air, and every flower of the field.
6:33 Seek the kingdom of God and his righteousness - Singly aim at this, that God, reigning in your heart, may fill it with the righteousness above described. And indeed whosoever seeks this first, will soon come to seek this only.
6:34 The morrow shall take thought for itself - That is, he careful for the morrow when it comes. The evil thereof - Speaking after the manner of men. But all trouble is, upon the whole, a real good. It is good physic which God dispenses daily to his children, according to the need and the strength of each.
7 Our Lord now proceeds to warn us against the chief hinderances of holiness. And how wisely does he begin with judging? wherein all young converts are so apt to spend that zeal which is given them for better purposes.
7:11 To them that ask him - But on this condition, that ye follow the example of his goodness, by doing to all as ye would they should do to you. For this is the law and the prophets - This is the sum of all, exactly answering Mat 5:17.The whole is comprised in one word, Imitate the God of love. Thus far proceeds the doctrinal part of the sermon. In thenext verse begins the exhortation to practise it.

2
2:28 For he is not a Jew - In the most important sense, that is, one of God's beloved people. Who is one in outward show only; neither is that the true, acceptable circumcision, which is apparent in the flesh.
2:29 But he is a Jew - That is, one of God's people.Who is one inwardly - In the secret recesses of his soul.And the acceptable circumcision is that of the heart - Referring to Deu 30:6; the putting away all inwardimpurity. This is seated in the spirit, the inmost soul, renewed by the Spirit of God. And not in the letter - Not in the external ceremony. Whose praise is not from men, but from God - The only searcher of the heart.