You are so confusing.
How about we settle on a definition for the word, 'law', so that that we are reading from the same book.
For example, you said, 'the law leads us to Christ.'
I read that as the sacrificial law, priesthood law, moral law, civil law, health law, food law, etc. The whole law and the prophets!
In other words, Jesus is the perfect sacrifice, the great high priest, perfectly moral, etc.
You seem to alternate between the ten and the law.
How do you define the word 'law'?
There are eternal laws (the 10 - spoken/written by God) and then there were the laws of Moses ... the Law (the 10) are in heaven as well .... ie lucifer and the 1/3 sinned (what is sin? - transgression of the Law.
His word states the law is written on the heart .... all hearts. All will be judged by the law ... has to be .... else how can God judge rightly?
Does God want us to sin? No ... What is sin? Transgression of the Law. How does one even know what sin is? Through the law.
The wages of sin is death (transgression of the law) was paid through the blood of Jesus and those who believe (for all times) will not be condemned by it .... and that is the gospel.
When one accepts Jesus, He sends the Holy Spirit to help us overcome sin .... it is a earthly life experience .... His Spirit helps us to overcome the Law (10) ... it is HIS work in the believer... not ours. We will never be perfect (until His return), but by obedience to the Law it helps us live a better life while we are here on earth. We don't endeavor to keep the law to be saved .... we do so because we are saved and Him working in us.
So, indeed there was law nailed to the cross and they are those not contained in the 10 (and later detailed in the life of Christ while on earth).
Deuteronomy 31:26
New International Version
“Take this
Book of the Law and place it beside the ark of the covenant of the LORD your God. There it will remain as a witness against you.
and what do we see in heaven?
Revelation 11:19
19
Then the temple of God in heaven was opened, and the ark of His covenant appeared in His temple. And there were flashes of lightning, and rumblings, and peals of thunder, and an earthquake, and a great hailstorm.
The law (10) are in the sanctuary in heaven inside the ark (tablets of stone) .... currently under the mercy seat ... there will come a day when the lid of the mercy seat will be opened and the mercy of God is no longer available and the fullness of God's wrath will be released ... with great plaques and destruction.
It's really not confusing .... it does become confusing when one states there is no law at all. That is just utterly impossible (ie Him judging rightly). There can not be judgement without law.
The whole law and the prophets!
no ... and He clearly states otherwise ....
Matthew 5:17
Contemporary English Version
Don't suppose I came to do away with the Law and the Prophets. I did not come to do away with them, but to give them their full meaning (and He did) AMEN! He also kept the law fully. Everything is fulfilled (filled fully) in HIM.