A "house" is essentially a container -- for a person, a family, several families or even a large group with shared interests (think of the term "houses of worship.") In the Bible, a "house" is also a container, but for spiritual things rather than natural things. In various uses a "house" can represent part of the mind, the whole mind, a whole person or even a church. The other nuance to the word "house" is that it is generally used in regards to our affections and desires rather than our thoughts and principles. This makes sense; we tend to engage our thoughts and rationality when we are out in the world doing our work, but when we are inside our houses we are driven most by love for our families and the desire to be good to those we love. So "house" tends to represent the things we want and care about -- which are ultimately the things that define us.

3971. 'It happened, when Rachel had borne Joseph' means acknowledgement of the spiritual represented by Joseph. This is clear from the meaning of 'bearing' as acknowledging, dealt with in 3905, 3911, 3915, 3919; from the representation of 'Rachel' as the affection for interior truth, dealt with in 3758, 3782, 3793, 3819; and from the representation of 'Joseph' as the spiritual kingdom and so the spiritual man, dealt with in 3969, and therefore as the spiritual; for having its origin in the Lord, the spiritual is that which makes the spiritual man and also the spiritual kingdom what they are. By means of Jacob's sons by the servant-girls and by Leah, the sections prior to this have dealt with the reception and acknowledgement of general truths, and eventually with the joining of those truths to the interior man, and so have dealt with man's regeneration up to and including his becoming spiritual. 'Joseph' is that spiritual man. The present sections coming directly after them deal with the fruitfulness and the multiplication of truth and good, which are meant by the flock which Jacob obtained for himself by means of Laban's flock.

[2] Indeed after the joining of the interior man to the external man has taken place, that is, of the spiritual and the natural, fruitfulness of good and multiplication of truth take place, for that joining together of the two is the heavenly marriage with man. It is from this marriage that such fruitfulness and multiplication spring. This also is why 'Joseph' in the external sense means fruitfulness and multiplication, 3965, 3969, the expressions 'fruitfulness' being used in reference to good, and 'multiplication' to truth, 43, 55, 913, 983, 2846, 2847.