6308. This influx is effected by means of spirits and angels. The order of the influx is that evil spirits first flow in, and the angels disperse their action. That there is such an influx the man does not perceive, because his thought is kept in freedom by means of the equilibration between these two influxes, and because he does not attend to such things; nor could the evil know if they did attend, because with them there is no equilibrium between evil and good. But they who are in good can know it; and they also know from the Word that there is something within which fights against the evil and falsity with them, and that the spiritual man fights against the natural; thus the angels, who are in man's interiors and in his spiritual things, 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 man 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).