God hardened his heart - but so did Pharaoh
For the Scripture says to Pharaoh: “I raised you up for this very purpose, that I might display my power in you and that my name might be proclaimed in all the earth.” Therefore God has mercy on whom he wants to have mercy, and he hardens whom he wants to harden." (Romans 9:17–18). We see in verse 18 that the reverse side of God’s mercy is His “hardening” of people in sin. This verse can be rather shocking. At first glance, it seems to say that God hardens the hearts of some people and then punishes them for the sins that flow out of their hardened hearts. Such an idea is repugnant to everything the Bible teaches about God’s character and righteousness. God is not capable of committing an unjust act. There is no “darker side” of God’s personality. Active Versus Passive Hardening To understand this, we have to distinguish between active hardening and passive hardening. What we have in this verse is an example of God’s punitive judgment against a wicked man. Pharaoh was already