Divine truth, who causes man to shun them.

Nevertheless, man ought to shun evils as if of himself, for what a man
does as if of himself becomes his and is appropriated to him as his own;
while what he does not as if of himself in no wise becomes his or is
appropriated to him. What comes from the Lord to man must be received by
man; and it cannot be received unless he is conscious of it that is, as
if of himself. This reciprocation is a necessity to reformation.

This is why the ten commandments were given, and why it is commanded in
them that man shall not worship other gods, shall not profane the name
of God, shall not steal, shall not commit adultery, shall not kill,
shall not covet the house, wife, or servants of another, thus that man
shall refrain from doing these things by thinking, when the love of evil
allures and incites, that they must not be done because they are sins
against God, and in themselves are infernal. So far, therefore, as a
man shuns these evils so far the love of truth and good enters from the
Lord; and this love causes man to shun these evils, and at length to
turn away from them as sins. And as the love of truth and good puts
these evils to flight it follows that man shuns them not from himself
but from the Lord, since the love of truth and good is from the Lord.
If a man shuns evils merely from a fear of hell they are withdrawn; but
goods do not take their place; for as soon as the fear departs the evils
return.

To man alone is it granted to think as if of himself about good and
evil, that is, that good must be loved and done because it is Divine and
remains to eternity, and that evil must be hated and not done because it
is devilish and remains to eternity. To think thus is not granted to
any beast. A beast can do good and shun evil, yet not of itself, but