'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?'