>>if God revoked his promises to Israel, what keeps him from revoking them again, and does God really change not (as Malachi 3:6 says)?
God really does seem to change. He reacts to events that happen in His creation.
After the Fall, he drives Adam and Eve out of Eden.
After men become wicked, he saves only Noah, his sons, and their spouses and drowns the rest in a flood.
After men become wicked again, he chooses Abraham and his descendants to be the Chosen People to show the way and presumably abandons the Gentiles to their fate.
After the Israelis become faithless and animal sacrifices ineffective, he sends Jesus, His Son, as the ultimate sacrifice to begin a new religion based on faith in Christ.
So yes, God abandons promises depending on the behavior of men.
God does not change. His nature is what it is.
While how He relates to people has changed, it is in fulfillment of His promises, not abandonment of them.
What promises specifically do you think God abandoned? Because that is a pretty serious accusation against God.
No. Regarding God's promises, Abraham's trust being one example:
Rom 4:20-25 (AV)I believe that you are missing how God works. He has two aspects to His Plan, His determined, non-negotiable determinate Will (thelema); the other being the one in which He gives some choices (boulomi) where your choice will determine the consequences, but still ones which he promises and delivers.
20He staggered not at the promise of God through unbelief; but was strong in faith, giving glory to God;
21And being fully persuaded that, what heGod had promised, heGod was able also to perform.
22And therefore it was imputed to himAbraham for righteousness.
23Now it was not written for his sake alone, that it was imputed to him;
24But for us also, to whom it shall be imputed, if we believe on him that raised up Jesus our Lord from the dead;
25Who was delivered for our offences, and was raised again for our justification.
Now we know that God heareth not sinners: but if any man be a worshipper of God, and doeth his willθέλημα, him he heareth. (Jn. 9:31 AV)========
θέλημα (thelēma, pronounced thel'-ay-mah)
A noun
From the prolonged form of G2309; a determination (properly the thing), that is, (actively) choice (specifically purpose, decree; abstractly volition) or (passively) inclination: - desire, pleasure, will.
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Saying, Father, if thou be willingβούλομαι, remove this cup from me: nevertheless not my willθέλημα, but thine, be done. (Lk. 22:42 AV)
βούλομαι (boulomai, pronounced boo'-lom-ahee)
A verb
Middle voice of a primary verb; to “will”, that is, (reflexively) be willing: - be disposed, minded, intend, list (be, of own) will (-ing). Compare G2309.
Capisce? Understand?