Imagine having your mother touch your cheek. Then imagine having your spouse or someone you love romantically touch your cheek. Then imagine having a baby touch your cheek. Then imagine having someone you hate and fear touch your cheek. They're very different feelings, aren't they? They all involve the same nerve endings, stimulated in basically the same ways, but with emotional content that varies to every point of the compass. This is because the sense of touch communicates and actually conveys emotion, communicates and conveys love (both good and bad) between people. That's why the Lord so often touched people as a way of healing them; through touch he could convey His love, which is life itself, to the people he touched. It's also why the people of Israel were not to touch the Ark of the Covenant -- their base loves would be conveyed to the holiness represented by the Ark.

A company might have executives setting policy and strategy, engineers designing products, managers handling personnel and others handling various functions. They all do different things -- but if they're doing them with a shared underlying purpose, the company -- and the individuals in it -- will likely be successful. The Lord wants all human society to function in a similar way. We have different skills and individual loves, but if we all share a mutual love -- a love of serving others -- then society will function as one, will be a reflection of heaven and will be a good receptacle for the Lord's love. This can also happen within each of us, as we unify our talents and ideas around a central love. And in an abstract sense, it illustrates how a wide collection of varying ideas can be unified around a shared good intention. That is the kind of love pictured when “one” is used in the Bible, either as a specific number or in the sense of several people or objects “being one.” In more casual references -- when used to identify a specific person or object -- the meaning is relatively literal, and is connected to that person or object.