I didn't say they didn't believe them. Read what I actually say instead of reading things into what I say. My point is that there is nothing in the NT to support your interpretations of those OT passages. That tells me that the NT authors did not have the same understanding of those OT passages as you do. Why else can you not find anything in the NT to support your doctrine?
What you are saying here is . . . now, I'm not trying to read anything into your words, but tell me if I'm not right about this,
For instance,
Jeremiah 31:31-32 KJV
31) Behold, the days come, saith the LORD, that I will make a new covenant with the house of Israel, and with the house of Judah:
32) Not according to the covenant that I made with their fathers in the day that I took them by the hand to bring them out of the land of Egypt; which my covenant they brake, although I was an husband unto them, saith the LORD:
There's a surface reading to this passage, which, if you forget about anything else, just what Jeremiah wrote, and what it sounded like to them, something like this,
That there was a covenant God made with the Israelites, the "house of Israel" and the "house of Judah", that is, the Northern and Southern Kingdoms, but the people broke that covenant. But there will be a time God will make a new covenant with them.
Jeremiah 31:33-34 KJV
33) But this shall be the covenant that I will make with the house of Israel; After those days, saith the LORD, I will put my law in their inward parts, and write it in their hearts; and will be their God, and they shall be my people.
34) And they shall teach no more every man his neighbour, and every man his brother, saying, Know the LORD: for they shall all know me, from the least of them unto the greatest of them, saith the LORD: for I will forgive their iniquity, and I will remember their sin no more.
And instead of the Law that condemns them, God will change them, they will all be forgiven, all will know Him.
Jeremiah 31:35-37 KJV
35) Thus saith the LORD, which giveth the sun for a light by day, and the ordinances of the moon and of the stars for a light by night, which divideth the sea when the waves thereof roar; The LORD of hosts is his name:
36) If those ordinances depart from before me, saith the LORD, then the seed of Israel also shall cease from being a nation before me for ever.
37) Thus saith the LORD; If heaven above can be measured, and the foundations of the earth searched out beneath, I will also cast off all the seed of Israel for all that they have done, saith the LORD.
And as long as the natural order endures, so will this people remain a people, a nation, as they understood themselves, before the LORD. And if you can measure to the end of heaven, or take a trip to the earth's core, God will throw them away. But otherwise, no.
Anyway, so this passage has a plain surface reading above, but your assertion is that we shouldn't interpret the passage as though it were that simple. That it actually means something else.
So then what does it mean?
And how do we know that's correct?
Much love!