The Bible doesn’t say that predestination is based on God’s prior knowledge of what people will do. It is based on God’s prior knowledge of people. The elect are predestined to be called—and all who are predestined to be called are called, and all who are called are justified, and all who are justified are glorified. No one in the group of the elect will fail to be elect. All the text is saying is that God’s predestination includes a knowledge in advance of the objects of His predestinating work—the people.
