Establishes it with, by means of blood shed for, the two houses of Israel.
Correct, the NC was made to the House of Israel and the House of Judah, as promised.
Just as God had promised.
Yep
You receive the benefit of it by grace (if you receive God's grace at all), not by the letter of the covenant.
Everyone in the NC receives grace. God dispensed grace, that's what the NC is all about.
The NC is not of the letter, but of the spirit.
No one said He'll need to shed blood again.
It is you who denies the NC.
How are you going to have a NC in the future with no shed blood?
(Heb 9:18) This is why even the first covenant was not put into effect without blood.
And you better hope you're right that He's not returning.
I'm in Christ Jesus, I have no worries. I have rest in Christ Jesus.
He was a minister only of the Spirit of the N.C., not the letter of it (2 Cor 3:6)
This is where you Darby followers are off your rockers.
The NC is a spiritual covenant, not a written on stone covenant.
There is no "spirit of the NC", that's like saying the "spirit of the Holy Spirit".
which was given ONLY to the houses of Israel, to whom he was not sent (Gal 2:9).
Because you think all Israelites are Jews, you are really confused.
In clinging to a covenant that was not intended and will never be given to you, you deny God's grace.
Nope.
God's grace was given to the whole world when the NC was put in place by the shed blood of Christ Jesus.