I'd say that your church in the case of predestination, made a lucky guess...
I believe in pre-destination...I beleive God pre-destinated the Gentile 'church' (not your church) before the foundation of the world...I do not believe God pre-destinated individuals... Although it's unbeknownst to any Catholic, there is abundant scripture that 'could' lead you in that direction...
There is however, plenty of scripture that allows for the pre-destination of the Gentile church, in general...
The “Gentile church”? I’ve never heard of that one.