The number "two" has two different meanings in the Bible. In most cases "two" indicates a joining together or unification. This is easy to see if we consider the conflicts we tend to have between our "hearts" and our "heads" -- between what we want and what we know. Our "hearts" tell us that we want pie with ice cream for dinner; our "heads" tell us we should have grilled chicken and salad. If we can bring those two together and actually want what's good for us, we'll be pretty happy. We're built that way -- with our emotions balanced against our intellect -- because the Lord is built that way. His essence is love itself, or Divine Love, the source of all caring, emotion and energy. It is expressed as Divine Wisdom, which gives form to that love and puts it to work, and is the source of all knowledge and reasoning. In His case the two aspects are always in conjunction, always in harmony. It's easy also to see how that duality is reflected throughout creation: plants and animals, food and drink, silver and gold. Most importantly, it's reflected in the two genders, with women representing love and men representing wisdom. That's the underlying reason why conjunction in marriage is such a holy thing. So when "two" is used in the Bible to indicate some sort of pairing or unity, it means a joining together. In rare cases, however, "two" is used more purely as a number. In these cases it stands for a profane or unholy state that comes before a holy one. This is because "three" represents a state of holiness and completion (Jesus, for instance, rose from the tomb on the third day), and "two" represents the state just before it.

710. 'Enter, you and all your house, into the ark' means things that constitute the will. This is clear from what has just been stated. In the previous chapter, which dealt with things of the understanding, verse 18 reads differently, namely 'You shall enter into the ark, you, and your sons, and your wife, and your sons' wives with you'. That 'a house' means the will and what constitutes the will is clear from various places in the Word, as in Jeremiah,

Their houses will be turned over to others, their fields and wives together. Jeremiah 6:11.

Here both 'houses' and 'fields and wives' refers to things of the will. In the same prophet,

Build houses and dwell in them; and plant gardens and eat their fruit. Jeremiah 29:5, 28.

Here 'building and dwelling in houses' has to do with the will, 'planting gardens' with the understanding. The same applies in other places. And frequently 'the house of Jehovah' stands for the Church where love is the chief thing. 'The house of Judah' stands for the celestial Church, 'the house of Israel' for the spiritual Church, because 'a house' means the Church. Consequently the mind of the member of the Church, which has within it things of the will and those of the understanding, that is, of charity and of faith, is meant by 'a house'.