AC 6308, 6325 - what comes in and what goes out

AC 6308
. . . they who are in good can know . . . know from the Word
that there is something within
which fights against the evil and falsity with them,
and that the spiritual person fights against the natural;
thus the angels, who are in a person's interiors
and in his spiritual things,
(fights) against the evil spirits
who are in his exteriors and in his natural things;
and it is also from this that the church is called militant.
But the evil which flows into the thought from the evil spirits,
does the person no harm if he does not receive it;
but if he receives it and transfers it
from the thought into the will,
he makes it his own;
and he then goes over to the side of the infernal spirits,
and withdraws from the angels of heaven.
This is what the Lord teaches when He says
that the things which enter into a man
do not make him unclean;
but the things which go out of him,
because these go forth from the heart, that is, from the will.
(Mark 7:14-23)

AC 6325
It is an eternal truth that the Lord rules heaven and earth,
and also that no one besides the Lord lives of himself,
consequently that everything of life flows in
- the good of life from the Lord,
and the evil of life from hell.
This is the faith of the heavens.
When a person is in this faith
(and he can be in it when he is in good),
then evil cannot be fastened and appropriated to him,
because he knows that it is not from himself, but from hell.
When a person is in this state,
he can then be gifted with peace,
for then he will trust solely in the Lord.