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.
John 6:30-33
30
They said therefore to him, "What then do you do for a sign, that we may see, and believe you? What work do you do?
31
Our fathers ate the manna in the wilderness. As it is written, 'He gave them bread out of heaven to eat.'"
32
Jesus therefore said to them, "Most certainly, I tell you, it wasn't Moses who gave you the bread out of heaven, but my Father gives you the true bread out of heaven.
33
For the bread of God is that which comes down out of heaven, and gives life to the world."
