Doesn't it say something more like the one who is saved WILL endure to the end. The assumption that our endurance is of our own will and not a blessing from God that we point to when recognized for this endurance to say "this was ALL Him and by His power did I endure, ALL glory to Him".Why do we have to endure in our faith?
I don't have a problem with God speaking to us in terms that make sense to the flesh but point to bigger spiritual truths we can't even comprehend until He opens our eyes to them. This is where I find the biggest disconnect between those who put so much stock into the choices we make and just how much a role they play in salvation. Even though most just call me a Calvinist and then tell me I believe we don't have choice and can just put life in neutral, and let Gods plan just "happen".
I call this out as lies and strawmen for a very good reason. I am not a Calvinist and believe nothing like this, and never have. But they will not pay me he respect of listening to what I actually say and responding to that.
It says we have to endure in our faith because in our heads when we are thinking about these things, no matter if we are on a peak or in a valley, this is what we should think on. For me the heart of this debate is not what we should do, or if it's really "us" doing it. It really comes down to who gets the credit/glory/recognition for that choice. I testify it's God that gets it all. That's it. But there are others that seem to disagree and think that we actually have a little claim on that credit and glory for ourselves. I disagree a LOT with this.