The context of Romans 8: 30, begins at verse 29, and concludes on verse 39. Here, in verse 29, the text is speaking of those who God foreknew and were PREDESTINATED to be conformed... in other words, the text is speaking to a future event speaking of the elect. "Many are called, but few are chosen" shows to be called, does not ALWAYS lead to a fruitful and beneficial end. The parable of the sower is a good example, as is the parable of the talents and others in the Epistles.