Arcana Coelestia # 3202
3202. 'Rebekah lifted up her eyes and saw Isaac' means a reciprocal directing by the affection for truth. This is clear from the meaning of 'lifting up the eyes and seeing' as directing the attention, dealt with above in 3198, here a reciprocal directing because it has been said already of Isaac that he 'lifted up his eyes and saw', and now here it is said of Rebekah that she 'lifted up her eyes and saw Isaac'; and from the representation of 'Rebekah' as the affection for truth, often dealt with already.
House
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.