Learning to live as a Christian is learning to live as a renewed human being, anticipating the eventual new creation in and with a world which is still longing and groaning for that final redemption.
N. T. WrightAgain and again the Sermon on the Mount calls and challenges us to a life of radical discipleship. Note: when Jesus says 'Blessed are the . . . . merciful, peacmakers', and so on, he doesn't just mean that they themselves are blessed. He means that the blessing of God's kingdom works precisely through those people into the wider world. That is how God's kingdom comes. That's one thing to hear afresh.
N. T. Wright