Jeremiah 31:31 [ A New Covenant ] “Behold, the days are coming, says the LORD, when I will make a new covenant with the house of Israel and with the house of Judah—[NKJV]
http://www.freerepublic.com/focus/religion/2793224/posts?page=16#16
You seem to rip verses out of context to support your eisegesis.
shalom b'SHEM Yah'shua HaMashiach Jer 31:34 "They will not teach again,
Shabbat Shalom
each man his neighbor and each man his brother,
saying, 'Know YHvH,
' for they will all know Me,
from the least of them to the greatest of them,"
declares YHvH,
"for I will forgive their iniquity,
and their sin I will remember no more."
In context, the younger son is Isra’el, the older is Judah...
Jeremiah 31:31
That is exactly the opposite of how the NT is read and understood. The NT interprets the OT, not the OT unlocking the NT as you have it. You might want to check out how our LORD and ALL of the Apostles seemed to apply the "mystery revealed" through the ministry of Jesus Christ and the Paraclete (1 Cor 2:14) to the OT passages cracking the code and showing how they all spoke of the Messiah.