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.

6118. 'Saying, Give us bread' means a plea for the sustainment of spiritual life. This is clear from the meaning of 'giving', when it has reference to 'bread', as sustaining; and from the meaning of 'bread' as spiritual life. In a specific sense 'bread' means the good of love and charity; but in a general sense it means spiritual life, for in this case bread is used to mean all food, as shown in 2165. When used to mean all food in general, it is spiritual life; for in the spiritual sense food in general is all the good of love and all the truth of faith. These two are what compose spiritual life.