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.

2716. As for the second arcanum - that the obscurity with those who are spiritual is brightened by light from the Lord's Divine Human - it is an arcanum that cannot be explained intelligibly, for it is the influx of the Divine that would have to be described. But one may gain some idea of it simply from the consideration that if the Supreme Divine Itself were to flow into the kind of good that has been described - good that has been defiled by so many evils and falsities - It could not be received; and if anything were received by someone possessing such good he would experience hellish torment and so perish. But the Lord's Divine Human is able to enter into those persons and to brighten such good, much as the sun shining into thick clouds produces in the early morning lovely signs of the dawn breaking. Yet the Lord is unable to present Himself before them as the light of the sun, only as the light of the moon. From this it may be seen that the reason the Lord came into the world was to save those who are spiritual, see 2661.