Christ Has Been and Always Will Be Our Hope.

 The royal law is the full righteousness of God. For us to keep the law perfectly would mean our surrender to God completely. However we can  never surrender completely, our flesh is too weak. We are so immersed in ourselves that to separate from our self-centeredness is impossible. Christ alone makes it possible for us to surrender self and end our separation from God. Without Christ there is no hope. Prior to Christ born in the flesh, there was the hope of Christ's arrival. After Christ's death there is hope of His return. Christ from everlasting to everlasting, Christ in the flesh born into time, Christ resurrected into time without end.

Jesus said- Joh_8:56  Your father Abraham rejoiced to see my day: and he saw it, and was glad.

Luk_24:44  And he said unto them, These are the words which I spake unto you, while I was yet with you, that all things must be fulfilled, which were written in the law of Moses, and in the prophets, and in the psalms, concerning me.

Christ has been and always will be our hope, and we will forever be in need of Him.

The royal law reveals the righteousness of God and shows us how far short of that righteousness we are. Told to keep these laws, we do, only to realize time and again how desperate our need of Christ is because we fail to keep that law perfectly. 

Articles on Romans by E. J. Waggoner Chapter 8

The Weakness of the Law. 

3 For what the law could not do, in that it was weak through the flesh, God sending his own Son in the likeness of sinful flesh, and for sin, condemned sin in the flesh; 4 that the righteousness of the law might be fulfilled in us,  who walk not after the flesh, but after the Spirit.

The law is strong enough to condemn, but it is weak, even powerless, with respect to what man needs namely, salvation. It was and is "weak through the flesh." The law is good, and holy, and just,  but man has no strength to perform it. Just as an ax may be of good steel, and very sharp, yet unable to cut down a tree because the arm that has hold of it has no strength, so the law of God could not perform itself. It set forth man's duty; it remained for him to do it. But he could not, and therefore Christ came to do it in him. What the law could not do, God did by his Son.

Likeness of Sinful Flesh. 

There is a common idea that this means that Christ simulated sinful flesh; that he did not take upon himself actual sinful flesh, but only what appeared to be such. But the Scriptures do not teach such a thing. "In all things it behooved him to be made like unto his brethren, that he might be a merciful and faithful High Priest in things pertaining to God, to make reconciliation for the sins of the people." Heb. 2:17. He was "born of a woman, born under the law," that he might redeem them that were under the law. Gal. 4:4, 5.

He took the same flesh that all have who are born of woman. A parallel text to Romans 8:3, 4 is found in 2 Corinthians 5:21. The former says that Christ was sent in the likeness of sinful flesh, "that the righteousness of the law might be fulfilled in us." The latter says that God "made him to be sin for us," although he knew no sin,  "that we might be made the righteousness of God in him."

Heb_5:2  Who can have compassion on the ignorant, and on them that are out of the way; for that he himself also is compassed with infirmity.

"Compassed with Infirmity." All the comfort that we can get from Christ lies in the knowledge that he was made in all things as we are. Otherwise we should hesitate to tell him of our weaknesses and failures. The priest who makes sacrifices for sins must be one "who can have compassion on the ignorant, and on them that are out of the way; for that he himself also is compassed with infirmity." Heb. 5:2.

This applies perfectly to Christ; "for we have not an High Priest which can not be touched with the feeling of our infirmities; but was in all points tempted like as we are, yet without sin." Heb. 4:15. This is why we may come boldly to the throne of grace for mercy. So perfectly has Christ identified himself with us, that he even now feels our sufferings.