How is the law weakened by the flesh?

In Romans 8:3–4 all three laws are mentioned. First, the law that really deserves to be called a law in the true sense of the word: the law of Moses. This law is good, but another law also works in us, namely the oppositional movement of the flesh, our nature. That is why we need yet another new movement to counter the effect thereof. In us this new law of life then begins to work by the grace of the Spirit of Christ. The relationship of these three laws toward one another is as follows: the first is a good guide; the second, that is, the law of the flesh, is the offending humanity; and the third law, the law of the Spirit, is a life-giving aid. Paul therefore writes: For God has done what the law, weakened by the flesh, could not do. By sending his own Son in the likeness of sinful flesh and for sin, he condemned sin in the flesh.¹