immortality what is it good for?

No, the Israelites weren't Canaanites because that is where they happened to live.  They were Canaanites because they were of those people, their sisters and brothers were Canaanites.  They were simply those Canaanites who happened to get the new religion.

As for what happened in Egypt let me guide to you the wiki https://en.wikipedia.org/wiki/The_Exodus

The whole thing never happened, being taken into Egypt, fleeing Egypt, never happened.  Those people that you mention probably never existed.

I don't know anything about that River Jordan thing, but I assume you got it from the bible, and dollars to doughnuts it never happened.  These writings are like 3,000 years old, and the stories were told and retold through the mists of time and probably went through several different languages, there is no reason to think any of it is true in the sense that it is any kind of historic record.  I'm tired of doing the heavy wiki lifting.  I'll leave it to you to wiki your Jordan story.

You continue to show disinterest in the whole idea of immortality, as in like war, what is it good for? 

Since it has been established that you are without sin, once I don't know, Bambi gets the drop on you and wrestles Betsy or Mama from your cold old hands and turns it on you and slays you, you are a sure candidate for the pearly gates, should there be a St Peter (How did he get that job, Bible scholar?), he'd probably be rolling out the red carpet for you.

But being a suspicious type, having that fish eye us Bohunks are famous for, you are probably going to wonder, before you accept that halo, what exactly is heaven going to be like.  The suspicion is that it is likely to be like Elsdon Methodist Church only fancier and certainly more comfy pews, and they had better be because dollars to doughnuts you never have to go to the bathroom in heaven, so there will be no bathroom breaks, just singing That Old Rugged Cross over and over again.  It will probably sound a lot better than it did in Elsdon, but still.

Sensing your hesitation St Peter tells you they have a special deal.  You can go back to Earth, and you will never get old, and the sun will never go red giant, and the big rip will never happen and you will live there forever, but if you ever get tired of it, too bad there is no way you can ever die.  Do you take it or leave it?