Does Romans 8:29 discuss justification, or glorification?
Those who believe ARE predestined to become like Jesus.
I’m a little hazy on the point you’re trying to make so I’ll give it my best shot...
I think you’re saying that we have the choice all along but since God is timeless, He knew what we’d choose so he “predestined” us...
The problem with that viewpoint (if that’s your viewpoint) is that there’s no scripture to back it up.
There is, however, a great deal of scripture to back up predestination.