Christian hope frees us to act hopefully in the world. It enables us to act humbly and patiently, tackling visible injustices in the world around us without needing to be assured that our skill and our effort will somehow rid the world of injustice altogether. Christian hope, after all, does not need to see what it hopes for (Heb. 11:1); and neither does it require us to comprehend the end of history. Rather, it simply requires us to trust that even the most outwardly insignificant of faithful actions - the cup of cold water given to the child, the widow's mite offered at the temple, the act of hospitality shown to the stranger, none of which has any overall strategic socio-political significance so far as we can now see - will nevertheless be made to contribute in some significant way to the construction of God's kingdom by the action of God's creative and sovereign grace.
Judas became the spokesman of all those who through the centuries would protest the ornamentation of the Christian cult and would feel that, when the best of gold and jewels were given to the God Who made them, there was some slight made to the poor - not because they were interested in the poor, but because they were envious of that wealth.
There is no doubt that the biblical concept of the Kingdom calls for a ministry to the suffering, the imprisoned, the oppressed, the hungry and whomever is dehumanized by an unjust society. In abstract, almost all of us can affirm this with enthusiasm. When it is the vocation, however, of one of our number to make this Gospel imperative, a matter demanding and requiring us to change our comfortable ways, then many of us fall away. The prophet has never been popular among his other contemporaries. He has been stoned, beheaded, crucified and shot. If not killed, we have been all too ready to vilify him or her in the name of God, little realizing that it may well be God who sent the prophet to challenge our complacency.
I have no interest in eliminating the tension between justice and forgiveness by taking justice off the table. Given the subtleties of sin and the persistence of evil, we would soon be living in moral anarchy and political chaos if there were no provision for justice.