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.

285. There are two inmost things of heaven, namely, innocence and peace. These are said to be inmost things because they proceed directly from the Lord. From innocence comes every good of heaven, and from peace every delight of good. Every good has its delight; and both good and delight spring from love, for whatever is loved is called good, and is also perceived as delightful. From this it follows that these two inmost things, innocence and peace, go forth from the Lord's Divine love and move the angels from what is inmost. That innocence is the inmost of good may be seen in the preceding chapter, where the state of innocence of the angels of heaven is described. That peace is the inmost of delight from the good of innocence shall now be explained.