No the promise and guarantee was based on Christ. NOT US, He said whoever believes will be sealed with the HS of promise until the day of redemption (ressurection day) he does not say whoever believes and follows a set of rules might be saved, You will not find that in scripture.
Believing IS doing.
Unbelief = disobedience.
Joh 3:36 He that believeth on the Son hath everlasting life: and he that believeth not the Son shall not see life; but the wrath of God abideth on him.
Believeth - pisteuōFrom G4102; to
have faith (in, upon, or with respect to, a person or thing), that is,
credit; by implication to
entrust (especially one's spiritual well being to Christ): - believe (-r), commit (to trust), put in trust with.
Believeth Not - apeitheō
From G545; to
disbelieve (wilfully and perversely): - not believe, disobedient, obey not, unbelieving.
Why was Israel cut off?
18 Boast not against the branches. But if thou boast, thou bearest not the root, but the root thee.
19 Thou wilt say then, The branches were broken off, that I might be graffed in.
20 Well; because of unbelief they were broken off, and thou standest by faith. Be not highminded, but fear:
21 For if God spared not the natural branches,
take heed lest he also spare not thee.
22 Behold therefore the goodness and severity of God: on them which fell, severity; but toward thee, goodness, if thou continue in
his goodness: otherwise thou also shalt be cut off.
Unbelief got them cut off.
What does Hebrews say?
Heb 3
17 But with whom was he grieved forty years?
was it not with them that had sinned, whose carcases fell in the wilderness?
18 And to whom sware he that they should not enter into his rest, but to them that believed not?
19 So we see that they could not enter in because of unbelief.
Did Israel "believe" in the existence of God? Absolutely. They did not obey God and thus were deemed to be in unbelief.
Look at Hebrews 11.
Abel was a doer of the word, he did something because his faith was an active faith.
4 By faith Abel offered unto God a more excellent sacrifice than Cain, by which he obtained witness that he was righteous, God testifying of his gifts: and by it he being dead yet speaketh.
How about Enoch?
5 By faith Enoch was translated that he should not see death; and was not found, because God had translated him: for before his translation he had this testimony, that he pleased God.
24 And Enoch walked with God: and he
was not; for God took him.
Enoch walked with God by faith. Walking was his actions, what he did. Just like Abraham...
11 And he received the sign of circumcision, a seal of the righteousness of the faith which
he had yet being uncircumcised: that he might be the father of all them that believe, though they be not circumcised; that righteousness might be imputed unto them also:
12 And the father of circumcision to them who are not of the circumcision only, but who also walk in the steps of that faith of our father Abraham, which
he had being
yet uncircumcised.
Abraham WALKED in the steps of faith. Righteousness is imputed to those who walk in the steps of faith just like Abraham.
Abraham was a DOER of the word. Abraham obeyed God by his faith. That is the trust the Bible talks about, not magic words with no deeds.
Heb 11:8 By faith Abraham, when he was called to go out into a place which he should after receive for an inheritance, obeyed; and he went out, not knowing whither he went.
Look at Noah...
Heb 11:7 By faith Noah, being warned of God of things not seen as yet, moved with fear, prepared an ark to the saving of his house; by the which he condemned the world, and became heir of the righteousness which is by faith.
Noah obeyed God and built the ark. Noah's faith was active, it was a doing faith, it was an obedient faith. Faith without action is dead faith.
Look at what James writes...
Jam 2
20 But wilt thou know, O vain man, that faith without works is dead?
21 Was not Abraham our father justified by works, when he had offered Isaac his son upon the altar?
22 Seest thou how faith wrought with his works, and by works was faith made perfect?
23 And the scripture was fulfilled which saith, Abraham believed God, and it was imputed unto him for righteousness: and he was called the Friend of God.
24 Ye see then how that by works a man is justified, and not by faith only.
Faith with no deeds is dead. Passive faith is dead faith.
Abraham was justified by the works of faith because obedience and faith is the same thing.
Is James contradicting Paul?
Rom 4
1 What shall we say then that Abraham our father, as pertaining to the flesh, hath found?
2 For if Abraham were justified by works, he hath
whereof to glory; but not before God.
3 For what saith the scripture? Abraham believed God, and it was counted unto him for righteousness.
4 Now to him that worketh is the reward not reckoned of grace, but of debt.
5 But to him that worketh not, but believeth on him that justifieth the ungodly, his faith is counted for righteousness.
6 Even as David also describeth the blessedness of the man, unto whom God imputeth righteousness without works,
Not at all because Paul speaks of the "steps of faith" in verse 12 because Paul understands the active dynamic of faith.
12 And the father of circumcision to them who are not of the circumcision only, but who also walk in the steps of that faith of our father Abraham, which
he had being
yet uncircumcised.
What did Abraham find pertaining to the flesh (Rom 4:1)? He found that there is nothing you can do that obligates God to extend His grace (Rom 4:4). Yet that does not negate the deeds of faith being absolutely necessary for faith to be perfect, if there are no deeds or obedience of faith then that faith is just a dead mental assertion that means nothing.
Every example in Hebrews 11 has faith working.
Every parable of Jesus shows the difference between those who DID and those who DID NOT.
It is all so simple.
Yield to God in humble obedience and He will raise you up. Refuse to yield to Him and be cut off.
That is why Jesus taught that you must be a doer of the word and not a hearer only. A doer of the word really believes, a doer of the word has real faith, a doer of the word WORKS TOGETHER with God and the outcome of that dynamic is the salvation of the soul.