What metaphors are used in Jesus: A Revolutionary Biography by John Dominic Crossan?

In Part III, the author comments on the attitude towards children in the area and time in which Jesus lived, quoting a text that, he suggests, encapsulates the generally held practice that unless a child was acknowledged and accepted by its father, it was essentially a nobody. This, he points out, gives exceptional metaphoric meaning to the Biblical stories of Jesus embracing children, suggesting that in his reaching for them and touching them, he is metaphorically communicating the idea not only that the Kingdom of God embraces everyone, but more importantly that it embraces Nobodies.