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.

6417. 'The son of a fertile one is Joseph' means the spiritual Church, in the highest sense the Lord's Divine spiritual. This is clear from the representation of 'Joseph' in the highest sense as the Lord's Divine spiritual, in the internal sense as the spiritual kingdom and the good of faith, and in the external sense as fruitfulness and multiplication, dealt with in 3969, 3971; and since 'Joseph' is the fruitfulness of good and the multiplication of truth, he is called 'the son of a fertile one'. 'Joseph' is used here to refer to the Lord's spiritual kingdom, while above 'Judah' is used to refer to His celestial kingdom; for there are two kingdoms constituting heaven, the celestial and the spiritual. The celestial kingdom constitutes the inmost or third heaven, the spiritual kingdom the middle or second heaven; and the Lord is seen by the spiritual kingdom as the moon, but by the celestial kingdom as the sun, 1053, 1521, 1529-1531, 4060. When one says that 'Joseph' in the highest sense represents the Lord's Divine Spiritual, the following is involved: The Lord is nothing else than Divine Good. What goes forth from His Divine Good and flows into heaven is in His celestial kingdom called the Divine celestial, but in His spiritual kingdom the Divine spiritual, so that one uses the expression Divine spiritual or Divine celestial with reference to receptivity.