Your question is answered in the scriptures I supplied. Are you now above learning and being convicted by the word of God because you have read it three times already? I have read it from cover to cover many times over, and learn something new and am convicted in different ways every time. There is more to learn from scripture and even the law of God than we could comprehend in ten of our short life times compared to eternity. I tell you the truth, those who can see nothing but the letter of the law, will never comprehend its true meaning and significance. The scribes and pharisees could never see more than the letter of the law because they viewed it from the selfish motive of observing it to be saved, self preservation. Those who reject the authority of God's law can never see anything more than the letter of the law, because they must insist that there is nothing to the law but the letter, in order to maintain their rejection of the same. Both of the above share the same problem, just for different reasons.
They lack the ability to see the deep and penetrating force, truth, and effect of the law because their motives are not pure. Or do you suppose God authored something that was not of significant force, truth, and effect? As already stated, the entire bible exists to address the condition of humanity in relation to the law and authority of God. I am sorry that you can see nothing but the letter of it, it proceeded from the mouth and hand of God to humanity, and it is every bit of a spiritual reality as God Himself is.
Ro 7:7 ¶ What shall we say then? Is the law sin? God forbid. Nay, I had not known sin, but by the law: for I had not known lust, except the law had said, Thou shalt not covet. 8 But sin, taking occasion by the commandment, wrought in me all manner of concupiscence. For without the law sin was dead. 9 For I was alive without the law once: but when the commandment came, sin revived, and I died. 10 And the commandment, which was ordained to life, I found to be unto death. 11 For sin, taking occasion by the commandment, deceived me, and by it slew me. 12 Wherefore the law is holy, and the commandment holy, and just, and good. 13 Was then that which is good made death unto me? God forbid. But sin, that it might appear sin, working death in me by that which is good; that sin by the commandment might become exceeding sinful. 14 ¶ For we know that the law is spiritual: but I am carnal, sold under sin.
God did not set up and establish legalism and dead works by giving humanity His commandments. We accomplished this, not God. I have already shown several times that love was always a prerequisite to the proper keeping the commandments of God.