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.

243. The third living creature had a face like a human being. This symbolizes the Divine truth of the Word in respect to its wisdom.

A human being in the Word symbolizes wisdom, because the human being was born to receive wisdom from the Lord and become an angel. The wiser someone is, therefore, the more human he is. True human wisdom consists in perceiving the existence of God, the nature of God, and what pertains to God. This is what the Divine truth of the Word teaches.

That a human being symbolizes wisdom is apparent from the following passages:

I will make a man more rare than fine gold, and a human being more rare than the gold of Ophir. (Isaiah 13:12)

A man means intelligence, and a human being wisdom.

...the inhabitants of the earth shall be burned up, and rare will be the human being left. (Isaiah 24:6)

...I will sow the house of Israel and the house of Judah with the seed of a human being and the seed of an animal. (Jeremiah 31:27)

You are My flock...; you are humankind, I am your God. (Ezekiel 34:31)

...the ruined cities shall be filled with a flock of humankind. (Ezekiel 36:38)

I looked upon the earth when, lo, it was empty and void, and to the heavens when they had not their light... I looked when, lo, there was no human being... (Jeremiah 4:23, 25)

They sacrifice a human being, they kiss the calves. (Hosea 13:2)

He measured the wall (of the Holy Jerusalem): one hundred and forty-four cubits, the measure of a human being, which is that of an angel. (Revelation 21:17)

So, too, in many other places, where a human being symbolizes someone who is wise, and in an abstract sense, wisdom itself.