'Christianity' does not promote the Law of God?
Let's see how the Word of God described "Christianity" ~or more accurately the sect of the Nazarenes or followers of "The Way"
"For we have found this man a real pest and a fellow who stirs up dissension among all the Jews throughout the world, and a ringleader of the sect of the Nazarenes.
But this I admit to you, that according to the Way which they call a sect I do serve the God of our fathers, believing everything that is in accordance with the Law and that is written in the Prophets;
The 'New Testament' does not promote the Law of God?
"But it is easier for heaven and earth to pass away than for one stroke of a letter of the Law to fail.
for it is not the hearers of the Law who are just before God, but the doers of the Law will be justified.
So then, the Law is holy, and the commandment is holy and righteous and good.
For we know that the Law is spiritual, but I am of flesh, sold into bondage to sin.
But if I do the very thing I do not want to do, I agree with the Law, confessing that the Law is good.
For I joyfully concur with the law of God in the inner man,
because the mind set on the flesh is hostile toward God; for it does not subject itself to the law of God, for it is not even able to do so,
Owe nothing to anyone except to love one another; for he who loves his neighbor has fulfilled the law.
But we know that the Law is good, if one uses it lawfully,
But one who looks intently at the perfect law, the law of liberty, and abides by it, not having become a forgetful hearer but an effectual doer, this man will be blessed in what he does.
Everyone who practices sin also practices lawlessness; and sin is lawlessness.
The New Covenant does not promote the Law of God?
"But this is the covenant which I will make with the house of Israel after those days," declares the LORD, "I will put My law within them and on their heart I will write it; and I will be their God, and they shall be My people."
"Moreover, I will give you a new heart and put a new spirit within you; and I will remove the heart of stone from your flesh and give you a heart of flesh. I will put My Spirit within you and cause you to walk in My statutes, and you will be careful to observe My ordinances."
Perhaps a reexamination is in order...