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.

1179. 'Therefore it used to be said, Like Nimrod, mighty in hunting before Jehovah' means that since so many were being persuaded this became a proverbial expression. In addition to this it means that such a religion easily captivates people's minds. This becomes clear from what has been stated and also from the actual sense of the letter. Moreover because in early times names were given to real things this name was given to this form of worship, that is to say, it used to be said that 'Nimrod', meaning that form of worship, was 'mighty in hunting', that is, was one that captivated people's minds. The reason for the words 'before Jehovah' is that people with whom that form of worship existed called separated faith 'Jehovah' or 'a man Jehovah', as is clear from what has been stated already about Cain in 340, who likewise means faith separated from charity. The difference between Cain and Ham however lies in the fact that the former existed in the celestial Church which had perception, while the latter existed in the spiritual Church which had none. As a consequence the former was far more monstrous than the latter. In early times such people were called 'mighty', as in Isaiah,

All the glory of Kedar will be brought to an end, and the remainder of the number of the bows of the mighty men of the sons of Kedar will be diminished. Isaiah 21:16-17.

And in Hosea,

You have ploughed wickedness, you have reaped iniquity, you have eaten the fruit of lying, because you have trusted in your way, in the multitude of your mighty men. Hosea 10:13.

And in other places. They called themselves 'men' (vir) and 'mighty' from faith, for one particular word in the original language expresses the idea of being 'mighty' and at the same time that of a man (vir), and it is used in the Word in reference to faith, and indeed in both senses.