'It often happens that Satan will insidiously commune with you in your heart and say: "Think of the evil you have done; your soul is full of lawlessness, you are weighed down by many grievous sins." Do not let him deceive you when he does this and do not be led to despair on the pretext that you are being humble. After gaining admission through the fall evil has the power to commune at all times with the soul, as man to man, and so to suggest sinful actions to it. You should answer it: "I have God's written assurance, for He says: 'I desire, not the sinner's death, but that he should return through repentance and live'" (cf. Ezek. 33:11). What was the purpose of His descent to earth except to save sinners, to bring light to those in darkness and life to the dead?'