No, you didn't. You believe it because someone taught it to you. They believe because someone taught it to them and so on until you get to Augustine who learned it from Bishop Ambros of Milan who taught Augustine how to interpret the bible in light of the Greek Classics.
The idea the God is immutable is so foreign to scripture that Augustine ridiculed it as childish fantasy because Genesis protrays God as someone who changes His mind (Genesis 6:6 and elsewhere). He flatly refused to become a Christian precisely because the plain reading of scripture teaches that God is not immutable.
This is proof text number two of usually only three that most people can come up with to support the idea that God is immutable. Proof texting is the closest you will ever come to making any argument that the bible teaches such a thing. By "proof texting" I mean presenting isolated, out of context passages that support an a priori doctrine that is brought to that scripture, not derived from it.
James 1:17 is saying the same thing as the last proof text you cited. God's character does not change. He is the same person with the same personality, temperament, etc yesterday, today and forever.
Why are you only answering part of the questions I ask?
Okay, I can't tell if I'm doing a bad job of asking the question or what so forget about answering the question let me just tell you what the point is.
Literally "repent" means to change direction. When used in the context of something mental it means to change your mind, to be sorry, rue or to suffer grief.
Do you know how many times the bible says God repented? It's not zero!
Let's use Jonah since that's already been brought up in the thread. It isn't the only time but we don't have to look at them all....
Jonah 3:10 And God saw their works, that they turned from their evil way; and God repented of the evil, that he had said that he would do unto them; and he did it not.
Now, I've just quoted the one sentence but you can look at however much context you want to look at because the ENTIRE BOOK of Jonah is specifically about God changing His mind! That's the theme of the entire book! That's why Jonah didn't want to go, that's why Jonah was angry, that's the main point of the entire book. God responds when people repent by repenting Himself.
In addition to the whole book of Jonah we have the testimony of Jeremiah who explicitly teaches this exact same principle in chapter 18...
Jeremiah 18: 7 At what instant I shall speak concerning a nation, and concerning a kingdom, to pluck up, and to pull down, and to destroy it;
8 If that nation, against whom I have pronounced, turn from their evil, I will repent of the evil that I thought to do unto them.
9 And at what instant I shall speak concerning a nation, and concerning a kingdom, to build and to plant it;
10 If it do evil in my sight, that it obey not my voice, then I will repent of the good, wherewith I said I would benefit them.
Passages such as these and others like Genesis 6:6 are the reason Augustine refused to become a Christian for decades. What do you do with them? Do you right off such passages are figures of speech? How can a whole book of the bible be one gigantic figure of speech? And how you deal with these passages doesn't touch how you deal with the incarnation, death and resurrection of God the Son! How is it possible to read the bible and come away thinking that God is anything similar to immutable?
Clete