All comes from unbelief. AS Adam in unbelief of God and belief of the deceiver. As Isreal in the wilderness. They could not enter God's rest because of unbelief, from which all sin sprouts from. God's wrath is most certainly on the unbelief, not the unbeliever for whom Christ died for.
Even now, unbelief is the full depth of God's anger and wrath.
There is a difference in The Nation of Israel and the individual that is called. This is where a lot of misinformation comes from. God has set aside the Gospel to Israel as a nation, but not His chosen and called in Christ.
Hebrews 3:7-19 Wherefore (as the Holy Ghost saith, To day if ye will hear his voice, Harden not your hearts, as in the provocation, in the day of temptation in the wilderness: When your fathers tempted me, proved me, and saw my works forty years. Wherefore I was grieved with that generation, and said, They do alway err in their heart; and they have not known my ways. So I sware in my wrath, They shall not enter into my rest.) Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God. But exhort one another daily, while it is called To day; lest any of you be hardened through the deceitfulness of sin. For we are made partakers of Christ, if we hold the beginning of our confidence stedfast unto the end; While it is said, To day if ye will hear his voice, harden not your hearts, as in the provocation. For some, when they had heard, did provoke: howbeit not all that came out of Egypt by Moses. But with whom was he grieved forty years? was it not with them that had sinned, whose carcases fell in the wilderness? And to whom sware he that they should not enter into his rest, but to them that believed not? So we see that they could not enter in because of unbelief.
Again; "So we see that they could not enter in because of unbelief."
How do we believe? By the foolishness of preaching of God's Word. "How shall they hear without a preacher." The Gospel is now given to the Gentiles, and they are the same, they will not enter God's rest because of unbelief. "They will hear it, that is the "Gospel", but unbelief is still the only thing that keeps the whole world from salvation. The Faith of Christ, The Grace of God, The Teaching and Conviction of the Holy Spirit, to those that are called according to His purpose.
Acts 28:25-31 And when they agreed not among themselves, they departed, after that Paul had spoken one word, Well spake the Holy Ghost by Esaias the prophet unto our fathers, Saying, Go unto this people, and say, Hearing ye shall hear, and shall not understand; and seeing ye shall see, and not perceive: For the heart of this people is waxed gross, and their ears are dull of hearing, and their eyes have they closed; lest they should see with their eyes, and hear with their ears, and understand with their heart, and should be converted, and I should heal them. Be it known therefore unto you, that the salvation of God is sent unto the Gentiles, and that they will hear it. And when he had said these words, the Jews departed, and had great reasoning among themselves. And Paul dwelt two whole years in his own hired house, and received all that came in unto him, Preaching the kingdom of God, and teaching those things which concern the Lord Jesus Christ, with all confidence, no man forbidding him.
How do we have rest? Not anguish, but peace and rest in Christ.
Acts 9:29-31 And he spake boldly in the name of the Lord Jesus, and disputed against the Grecians: but they went about to slay him. Which when the brethren knew, they brought him down to Caesarea, and sent him forth to Tarsus. Then had the churches rest throughout all Judaea and Galilee and Samaria, and were edified; and walking in the fear of the Lord, and in the comfort of the Holy Ghost, were multiplied.
Believe on the Lord Jesus Christ, that He is the Son of God and you will be saved.
Hebrews 4:1 Let us therefore fear, lest, a promise being left us of entering into his rest, any of you should seem to come short of it.
Do we want rest or anguish?
Hebrews 4:3 For we which have believed do enter into rest, as he said, As I have sworn in my wrath, if they shall enter into my rest: although the works were finished from the foundation of the world.
Rest, sweet rest in God's rest through Jesus Christ.
Do we want rest?
Heb 4:9 There remaineth therefore a rest to the people of God.
Heb 4:10 For he that is entered into His rest, he also hath ceased from his own works, as God did from his.
Heb 4:11 Let us labour therefore to enter into that rest, lest any man fall after the same example of unbelief.
Anything outside of Rest in Christ is our own works trying to take our anguish and overcome so we can be right before God, This is Sin.
The works in God's rest are such that will follow us into the presence of God as Christ presents His Body the Church to the Father.
Revelation 14:13 And I heard a voice from heaven saying unto me, Write, Blessed are the dead which die in the Lord from henceforth: Yea, saith the Spirit, that they may rest from their labours; and their works do follow them.
In Christ's rest: Phillip