If, however, the Dominion of God in the present is chiefly about our becoming holy persons, many will perhaps be dismayed by how far short of God’s holiness they fall. This reaction is both understandable and proper. We do sin and fall short of God’s best for our lives. But we need to understand that salvation, or God’s saving activity in our lives, is a matter of grace, not something we earn. This is why Jesus reassures his followers by saying, “Do not be afraid, little flock, for it is your Father’s good pleasure to give you the Dominion” (Luke 12:32). The Dominion in our lives comes as a gift, not as something we have earned, and its effects, including holiness, are likewise also a gift. Yet, once it has been given, it requires of us our all to manifest it and live it out. “No one who puts a hand to the plow and looks back is fit for the Dominion of God” (Luke 9:62).
Ben Witherington in Imminent Domain: The Story of the Kingdom of God and Its Celebration (p.17)