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.

3296. 'And the greater will serve the less' means that the good of truth must for a time be subordinate. This is clear from the meaning of 'the greater' as good, from the meaning of 'serving' as being subordinate, and from the meaning of 'the less' as truth. This matter may be seen from what follows, being described there by means of Esau and Jacob. For as has been stated, 'Esau' represents good, and 'Jacob' truth. The rise of a struggle or conflict over priority and over lordship is described in the internal sense by Jacob's stealing the birthright from Esau and also the blessing. But the fact that this situation would last for a time only is evident from Isaac's prophecy concerning Esau,

And by your sword you will live, and you will serve your brother; and it will be, when you have dominion over him, that you will break his yoke from above your neck. Genesis 27:40.

[2] The fact that the things said in this verse have an internal sense, and that without that internal sense nobody can know what they mean, is quite evident, that is to say, what is meant by 'two nations are in your womb, and two peoples will be separated from your bowels', and by '[one] people will prevail over [the other] people, and the greater will serve the less'. The fact that they do mean the things that have been stated is clear from what follows where the subject is dealt with extensively. Furthermore one can scarcely credit that these statements embody such things unless one knows about good and truth, about the birth of the first from the second, and about the change of state with a person when being regenerated. In the internal sense the subject is indeed the Lord, here how the Lord made His Natural Divine. But in the representative sense the subject is the regeneration of man, for man's regeneration is an image of the Lord's glorification, 3043, 3138, 3212 - that is, in regeneration one sees as in a certain image the manner in which the Lord glorified His Human, or what amounts to the same, made it Divine. For as the Lord changed completely His human state into a Divine one, so also does the Lord when He is regenerating man change his state completely, for He turns his old man into a new man.