Really? Are you saying that we are still in the old covenant now in your view Rick? How do you think John 14:26; John 16:13; John 7:17; Hebrews 8:11-12 and 1 John 2:27; John 1:29; 36 and 1 John 1:9; John 3:16 all connect with Jeremiah 31:34?
Hi look at the context of chapter 30 and 31. He is not saying Jesus did not bring in the new covenant he is saying the nation of Israel one day will be joined to it. In Chapter 30 it is the day of Jacob's Trouble.
This passage is a latter day passage and talks about the city Jerusalem being built on its own mound at the time David is raised up.
‘Behold, I will bring back the captivity of Jacob’s tents,
And have mercy on his dwelling places;
The city shall be built upon its own mound,
And the palace shall remain according to its own plan.
19 Then out of them shall proceed thanksgiving
And the voice of those who make merry;
I will multiply them, and they shall not diminish;
I will also glorify them, and they shall not be small.
20 Their children also shall be as before,
And their congregation shall be established before Me;
And I will punish all who oppress them.
21 Their nobles shall be from among them,
And their governor shall come from their midst;
Then I will cause him to draw near,
And he shall approach Me;
For who
is this who pledged his heart to approach Me?’ says the LORD.
22 ‘You shall be My people,
And I will be your God.’ ”
23 Behold, the whirlwind of the LORD
Goes forth with fury,
A continuing whirlwind;
It will fall violently on the head of the wicked.
24 The fierce anger of the LORD will not return until He has done it,
And until He has performed the intents of His heart.
In the latter days you will consider it.
This passage is connected to chapter 31 as it opens with
1 “At the same time,” says the LORD, “I will be the God of all the families of Israel, and they shall be My people.”
2 Thus says the LORD:
“The people who survived the sword
Found grace in the wilderness—
Israel, when I went to give him rest.”
3 The LORD has appeared of old to me,
saying:
“Yes, I have loved you with an everlasting love;
Therefore with lovingkindness I have drawn you.
4 Again I will build you, and you shall be rebuilt,
O virgin of Israel!
Now the verses after the promise of the new covenant God says Israel will not cease to be nation in God's eyes not will He cast of the seed of Israel for all they have done.
The chapter ends with the view of Jacob's trouble
38 “Behold, the days are coming, says the LORD, that the city shall be built for the LORD from the Tower of Hananel to the Corner Gate. 39 The surveyor’s line shall again extend straight forward over the hill Gareb; then it shall turn toward Goath. 40 And the whole valley of the dead bodies and of the ashes, and all the fields as far as the Brook Kidron, to the corner of the Horse Gate toward the east,
shall be holy to the LORD. It shall not be plucked up or thrown down anymore forever.”
You see this is the time when Israel is saved and is brought into the new covenant and the prophecies in LUKE 1 are fulfilled. At the end of the tribulation those bodies will be there and the city Jerusalem will need rebuilding and David indeed will be raised up.