Because of what? His foreknowledge?

That's a very linear way of looking at it.
Maybe God forces people down certain paths because He wants certain results to happen.
If God did this, then we don't have free will. We're all automatons.
For example (the ultimate example) Pharaoh... God hardened Pharaoh's heart because God wanted to judge Egypt and Egypt's false gods, and He wanted a big demonstration to reveal Himself to Israel and cement them together as a people.
God didn't harden Pharoh's heart.
That is simply a way of trying to explain how Pharoah distanced himself from God's love.
God is always the same, always loving. He doesn't sit there plotting an ends to man like a director - or much the same way as the Greeks held Zeus, and Moslems hold al-Lah.
God is love (1 John 4:8). He does not change (Hebrews 13:8). He never angers. He eternally loves. When we refer to God's anger it is how we react to His love. We describe it as anger as an anthropomorphism - using a human characteristic to describe God.
"God is the sun of justice, as it is written, who shines rays of goodness on simply everyone. The soul develops according it its free will into either wax because of its love for God or into mud because of its love of matter. Thus just as by nature the mud is dried out by the sun and wax is automatically softened, so also every soul which loves matter and the world and has fixed its mind from God is hardened as mud according to its free will and by itself advances to its perdition, as did Pharaoh.* However, every soul which loves God is softened as wax, and receiving divine impressions and characters it becomes 'the dwelling place of God in the Spirit'
- St. Maximus the Confessor, Chapters on Knowledge 1:12 (quoted in Carlton, C (1999) "The Truth: What Every Roman Catholic Should Know about the Orthodox Church", (Regina Orthodox Press), pp94-5)
This refers to the Old Testament passages where God is said to have hardened Pharaohs heart.