Romans 8, as God has predestined hos own o get saved, and Paul stated that tey must hear the Gospel messag for that!
Yesh! I'm impressed! You actually made an effort at it!
29 For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren.
30 Moreover
whom he did predestinate, them he also called: and whom he called, them he also justified: and whom he justified, them he also glorified. Ro 8
I like JFB on this:
"whom he did predestinate, them he also called—
The word "called" (as Hodge and others truly observe) is never in the Epistles of the New Testament applied to those who have only the outward invitation of the Gospel (as in Mt 20:16; 22:14). It always means "internally, effectually, savingly called." It denotes the first great step in personal salvation and answers to "conversion." Only the word conversion expresses the change of character which then takes place, whereas
this "calling" expresses the divine authorship of the change, and the sovereign power by which we are summoned, Matthew-like, Zaccheus-like, out of our old, wretched, perishing condition, into a new, safe, blessed life."
Or Barnes:
"Them he also called -
Called by his Spirit to become Christians. He called,
not merely by an external invitation, but in such a way as that they in fact were justified. This cannot refer simply to an external call of the gospel, since those who are here said to be called are said also to be justified and glorified. The meaning is, that there is a certain connection between the predestination and the call, which will be manifested in due time. The connection is so certain that the one infallibly secures the other."
(
http://biblehub.com/commentaries/romans/8-30.htm)
See:
Born Again: The Doctrine of Effectual Calling