Summa Theologica

Ia IIae q. 79 : Of The External Causes Of Sin (Four Articles)

[Letter] [A4] Entire question
[Letter] [A4] 1. Whether God is a cause of sin?
[Letter] [A4] 2. Whether the act of sin is from God?
[Letter] [A4] 3. Whether God is the cause of spiritual blindness and hardness of heart?
[Letter] [A4] 4. Whether blindness and hardness of heart are directed to the salvation of those who are blinded and hardened?