Selection from Arcana Coelestia ~ Emanuel Swedenborg
They who are within the church and have confirmed themselves against Divine truths, especially against these -• that the Lord's Human is Divine- if they have confirmed themselves against them, not only by doctrine but also by life, they have reduced themselves to such a state as to their interiors that afterwards they cannot possibly be brought to receive them, for what is once confirmed by doctrine, and at the same time by life, remains to eternity.
• that the works of charity contribute to salvation
Those who do not know the interior state of man may suppose that anyone, no matter how he has confirmed himself against these truths, can yet easily accept them afterwards, provided he is convinced. But that this is impossible has been granted me to know by much experience in regard to such persons in the other life.
For whatever is confirmed by doctrine is absorbed by the intellectual part, and what is confirmed by life is absorbed by the will part; and that which is inrooted in both man's lives, the life of his understanding and the life of his will, cannot be rooted out.The very soul of man which lives after death is formed thereby, and is of such a nature that it never recedes therefrom. This is also the reason why the lot of those within the church with whom this is the case, is worse than the lot of those who are out of the church; for those who are out of the church, who are called Gentiles, have not confirmed themselves against these truths, because they have not known them; and therefore such of them as have lived in mutual charity, easily receive Divine truths, if not in the world, yet in the other life.
For this reason when any new church is being set up by the Lord, it is not set up with those who are within the church, but with those who are without, that is, with the Gentiles. These things are often treated of in the Word.
(from Arcana Coelestia 4747)