Why doesn't God save everyone?

The question of why not everyone is saved addresses the nature of God’s sovereignty and justice. If God were to save everyone, there would be no rationale for hell. The Bible indicates that salvation is not based on human performance but rather on God's choice and mercy. Romans 9 teaches that God has the right to bestow mercy on whom He wills. Thus, if God saves some and not others, it isn’t a matter of fairness but of His sovereign design, which upholds His justice alongside His mercy.