Sounds like your teacher followed the calvinist branch of Christianity then?
Predestination (in terms of religious salvation but also in general, like in determinism) is something that I always found fascinating. Because, if you are predestined to something (either to salvation or to just wake up today), why do we even try so hard if the outcome is already preset? Why try to be a good person if you are already destined to go to heaven or hell since you've been born? Or why do you set the alarm to wake up early in the morning and go to work if you have no influence on what will happen? Couldn't you just sleep the whole day and the result would be the same because it's already preset?
I guess you wouldn't really have that choice. If a full determinism is true, there is no room for free will and even trying to affect the result is something you are already predestined to do and any choice you think you make (or even vacillating over the choices you make) is still something you were predestined to do and only an illusion of free will.