Yes, this was a conditional promise. Look at the conditions.
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.
The sun rose today, but you won't believe God's promise. You've not measured the heaven above, but still you won't believe!
So yes, these are conditional promises, and those are the conditions.
Much love!
You do not undersand what the 'seed of Israel' is.
Becuase you are thinking according to the flesh.
Your own mind misses the fact that the jews ceased to exist as a nation for thousands of years.
Acording to your own reasoning you create an impossible conflict with the scripture you posit as proof of what actually?
The seed of Israel is the people of God. And they were not the people of God even in Jesus's day 2000 years ago, but some did believe and were the people of God, but the majority of them were not His people, and that goes back way farher into the past than in Jesus's day.
God swore in His wrath, the unbelieving jews would never enter into His rest.
And even today, Hebrews 3:6, You are proven not to be the people of God if you do not hold firm to Christ and continue on with Him believing.
If the Father does not grant you to know and believe in Christ, then you are not the people of God, meaning you are not of the seed of Israel.
John 6
63 It is the Spirit who gives life; the flesh profits nothing. The words that I speak to you are spirit, and
they are life.
64 But there are some of you who do not believe.” For Jesus knew from the beginning who they were who did not believe, and who would betray Him.
65 And He said, “Therefore I have said to you that no one can come to Me unless it has been granted to him by My Father.”
66 From that
time many of His disciples went [
p]back and walked with Him no more.
67 Then Jesus said to the twelve, “Do you also want to go away?”
Hebrews 3
Therefore, holy brethren, partakers of the heavenly calling, consider the Apostle and High Priest of our confession, Christ Jesus, 2 who was faithful to Him who appointed Him, as Moses also
was faithful in all His house. 3 For this One has been counted worthy of more glory than Moses, inasmuch as He who built the house has more honor than the house. 4 For every house is built by someone, but He who built all things
is God. 5 And Moses indeed
was faithful in all His house as a servant, for a testimony of those things which would be spoken
afterward, 6
but Christ as a Son over His own house, whose house we are if we hold fast the confidence and the rejoicing of the hope [a]firm to the end.
Be Faithful
7 Therefore, as the Holy Spirit says:
“Today, if you will hear His voice,
8 Do not harden your hearts as in the rebellion,
In the day of trial in the wilderness,
9 Where your fathers tested Me, tried Me,
And saw My works forty years.
10
Therefore I was angry with that generation,
And said, ‘They always go astray in their heart,
And they have not known My ways.’
11
So I swore in My wrath,
‘They shall not enter My rest.’ ”
12
Beware, brethren, lest there be in any of you an evil heart of unbelief in departing from the living God; 13 but [
b]exhort one another daily, while it is called “Today,” lest any of you be hardened through the deceitfulness of sin. 14 For we have become partakers of Christ if we hold the beginning of our confidence steadfast to the end, 15 while it is said:
“Today, if you will hear His voice,
Do not harden your hearts as in the rebellion.”
Failure of the Wilderness Wanderers
16
For who, having heard, rebelled? Indeed, was it not all who came out of Egypt, led by Moses? 17
Now with whom was He angry forty years? Was it not with those who sinned, whose corpses fell in the wilderness? 18
And to whom did He swear that they would not enter His rest, but to those who did not obey?
19
So we see that they could not enter in because of unbelief.
Luke 13
The Narrow Way
22 And He went through the cities and villages, teaching, and journeying toward Jerusalem. 23 Then one said to Him, “Lord, are there few who are saved?”
And He said to them, 24 “Strive to enter through the narrow gate, for many, I say to you, will seek to enter and will not be able.
25
When once the Master of the house has risen up and shut the door, and you begin to stand outside and knock at the door, saying, ‘Lord, Lord, open for us,’ and He will answer and say to you, ‘I do not know you, where you are from,’ 26 then you will begin to say, ‘We ate and drank in Your presence, and You taught in our streets.’
27
But He will say, ‘I tell you I do not know you, where you are from. Depart from Me, all you workers of iniquity.’ 28
There will be weeping and gnashing of teeth, when you see Abraham and Isaac and Jacob and all the prophets in the kingdom of God, and yourselves thrust out.
29
They will come from the east and the west, from the north and the south, and sit down in the kingdom of God. 30 And indeed there are last who will be first, and there are first who will be last.”
31 [
i]On that very day some Pharisees came, saying to Him, “Get out and depart from here, for Herod wants to kill You.”
32 And He said to them, “Go, tell that fox, ‘Behold, I cast out demons and perform cures today and tomorrow, and the third
day I shall be [
j]perfected.’ 33 Nevertheless I must journey today, tomorrow, and the
day following; for it cannot be that a prophet should perish outside of Jerusalem.
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v29, coming from the 4 corners of the earth into the kingdom of God, Jesus is telling the jews that the gentiles will enter into the kingdom of God and they will not as they are not the seed of Israel.
God only saves those who are His people.
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Israel’s Rejection of Christ - I tell the truth in Christ, I am not lying, my conscience also bearing me witness in the Holy Spirit, that I have great sorrow and continual grief in my heart. For I could wish that I myself were accursed from Christ for my brethren, my countrymen according to the...
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Israel’s Rejection and God’s Purpose
6 But it is not that the word of God has taken no effect. For they
are not all Israel who
are of Israel, 7 nor
are they all children because they are the seed of Abraham; but, “In Isaac your seed shall be called.” 8 That is, those who
are the children of the flesh, these
are not the children of God; but the children of the promise are counted as the seed. 9 For this
is the word of promise: “At this time I will come and Sarah shall have a son.”
10 And not only
this, but when Rebecca also had conceived by one man,
even by our father Isaac 11 (for
the children not yet being born, nor having done any good or evil, that the purpose of God according to election might stand, not of works but of Him who calls), 12 it was said to her, “The older shall serve the younger.” 13 As it is written, “Jacob I have loved, but Esau I have hated.”