What are the big things? I would list love, freedom, evil, God, eternity, nonviolence, forgiveness, grace and mercy. These the dualistic mind cannot comprehend, and in fact, it usually gets them utterly wrong because they each have a paradoxical character that demands some degree of non-dual thinking.
When people say piously, “Thy kingdom come” out of one side of their mouth, they need also to say, “My kingdom go!” out of the other side. The kingdom of God supersedes and far surpasses all kingdoms of self and society or personal reward.
The celebration of Christmas is not a sentimental waiting for a baby to be born, but much more an asking for history to be born! (see Romans 8: 20–23).