The problem you cannot avoid
Let’s be honest. If you decide God does not cast people off, stop loving them, or take his Spirit from them, you will then have to decide what to do with all those verses in the Bible that say he does. That’s gonna be a problem. But if you decide God DOES cast people off, stop loving them, and take his Spirit from them, not only will you have to decide what to do with all those verses in scripture about God’s never-ending, never-failing, never-changing love, but you will also have to wonder what love actually IS if a loving God can do that (doesn’t sound like anything we have ever understood about love). Plus you will have to decide whether you personally are safe in the care of God. Either way you have a problem, but I believe one problem is far greater than the other.