God's word is the truth, and I believe Paul was pointing us to it.
I believe that is what his faith was in.
Were you an old covenant Jew before Paul converted you into a new covenant Christian?
I wasn't.
I was a Gentile before converting, so God's everlasting covenant was new for me.
And I will make an everlasting covenant with them, that I will not turn away from them, to do them good;
but I will put My fear in their hearts, that they shall not depart from Me.
Jeremiah 32:40
Wherefore remember, that ye being in time past Gentiles in the flesh,
that at that time ye were without Christ, being aliens from the commonwealth of Israel,
and strangers from the covenants of promise,
having no hope, and without God in the world:
But now in Christ Jesus ye who sometimes were far off are made nigh by the blood of Christ.
Ephesians 2:11-13
It is only abolished from your flesh.
The Lord abolished my enmity against it, so He could write His laws in my heart and mind.
Paul was quoting the Old Testament too, so how can you say it has been abolished.
This is his rendition of Jeremiah 31:33
For this is the covenant that I will make with the house of Israel after those days, saith the Lord;
I will put My laws into their mind, and write them in their hearts:
and I will be to them a God, and they shall be to Me a people:
Hebrews 8:10
And how do you check those laws which are written in your heart,
to know if they are God's laws,
if God's law has been abolished?
Since Jesus was God's word come in the flesh, and He was nailed to a crucifix,
you could say that.
But how does that help anybody?
How does that teach us His commandment? so we can walk in His righteousness.
And He said to them all,
If any man will come after Me,
let him deny himself, and take up his cross daily, and follow Me.
Luke 9:23
That is a Christian's choice.
Just because Jesus was nailed to a crucifix doesn't mean we can't take up our cross.
Does it.
And he that taketh not his cross, and followeth after Me, is not worthy of Me.
Matthew 10:38