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.

3212. 'And Isaac was comforted after [the death of] his mother' means a new state. This becomes clear from the meaning of 'receiving comfort' as a new state, for a state of comfort is a new state, which, following the previous one, is meant by 'after his mother'. The new state is a state of glorification of the Rational; already so as to good, it now became glorified as to truth. The Rational was glorified when it became Divine as regards both good and truth.

[2] As to the Human the Lord was made new, that is, was glorified, or what amounts to the same, was made Divine; but nobody can possibly grasp this, nor thus believe it, who is immersed in worldly and bodily loves. He has no knowledge at all of what spiritual or celestial is, and does not even wish to know. But anyone who is not immersed in worldly and bodily loves can perceive it, for he believes that the Lord is one with the Father, that everything holy comes from Him, and consequently that He is Divine even as regards the Human. And anyone who believes this perceives it in his own way.

[3] The state of the Lord's glorification can be grasped to some extent from the state of man's regeneration, for man's regeneration is an image of the Lord's glorification, 3043, 3138. When a person is being regenerated he becomes completely different from before and is made new. Once he has been regenerated therefore he is called one who has been born again and created anew. At that point a person's face and speech remain the same, but not so his mind. Once he is regenerate his mind is open towards heaven, and love to the Lord and charity towards the neighbour, together with faith, reside in it. It is the mind that makes him a person who is different and new. Change of state cannot be discerned in a person's body, only in his spirit. The body is merely the covering for his spirit. When he lays aside the former his spirit is seen, and indeed in a form altogether different if he has been regenerated. In this case it is a visible form of love and charity that possesses beauty beyond description, 553, replacing the previous form, which had been a visible form of hatred and cruelty possessing ugliness also beyond description. From this it may become clear what a regenerate person is, that is, one born again or created anew, namely one who is altogether different from before and who is new.

[4] From this image one can have some conception of the Lord's glorification. He was not regenerated as man is but was made Divine, being made so from Divine love itself, for He was made Divine love itself. The nature of His form at that time was shown to Peter, James, and John when they were allowed to see Him not with their physical eyes but with those of the spirit, that is to say, on the occasion when His face shone like the sun, Matthew 17:2. This was His Divine Human, as is clear from the voice which at that time declared from the cloud, 'This is My beloved Son', Matthew 17:5 - 'the Son' being the Divine Human, see 2628.