One of the key biblical passages that has been cited in discussions of predestination is Romans 8:29-30, which states that "For those God foreknew he also predestined to be conformed to the image of his Son, that he might be the firstborn among many brothers and sisters. And we know that in all things God works for the good of those who love him, who have been called according to his purpose." This passage suggests that God has a plan for the lives of believers and that He has predestined them for a specific purpose.