Excerpt from a passage in Arcana Coelestia ~ Emanuel Swedenborg
[I]t is not known what spiritual life is, thus neither that spiritual life is an interior life distinct from the natural life, which is exterior.Spiritual life is given by the Lord to man through the reception of the truth of faith in the good of charity. ...[W]hen a man of the church who is in the good of faith reads the Word, angels adjoin themselves to him, and are delighted in the man, because of the wisdom which then inflows to them through the Word from the Lord.
From this is the conjunction of heaven with man, which would not be possible without the Word. For the Word is such that there is not even a point or a jot in its original tongue which does not affect the angels, and conjoin them with man.
(Arcana Coelestia 9152)