"What We Owe The Poor" is an interview with  Tim Keller in  Christianity Today, concerning his book, Generous Justice. Part of the interview is below. The complete interview can be found at the link.

http://www.christianitytoday.com/ct/2010/december/10.69.html Why do you think generosity is crucial to biblical justice?

I used the term "generous justice" because many people make a distinction between justice and charity. They say that if we give to the poor voluntarily, it's just compassion and charity. But Job says that if I'm not generous with my money, I'm offending God, which means it's not an option and it is unjust by definition to not share with the poor. It's biblical that we owe the poor as much of our money as we can possibly give away.

What do you hope readers will learn about the relationship between God's grace and justice?

Cause and effect: God's grace makes you just. The gospel is such that even though you're not saved by good works, you are saved by grace and faith-and it will change your life and lead to good works. According to the Bible, if you really have been changed by the grace of God, it will move you toward the poor.

Many Christians hear "justice" and think about issues like sex trafficking, HIV/AIDS, and so on. Would you include those in your definition?

My definition of justice is giving humans their due as people in the image of God. We all agree that everyone deserves not to be enslaved, beaten, raped, or killed. We are not just talking about helping the poor but helping people whose rights are being violated. What people are due is not an easy thing to determine from the Bible. I'm urging Christians not to be so certain that they know how the Bible translates into public policy.

Many Christians say that the best way to do justice in the world is to be a Democrat, others say to be a Republican. I'm trying to shake people loose and say that you need to be involved in your political party without that kind of triumphalism.

Can you elaborate on the relationship between preaching and justice?

The heart of what I'm supposed to do is preach the Word, win people to faith, and then disciple them. But I can't disciple people without telling them, "Help the poor." To believe in Jesus is to obey all he commanded, which means helping the poor.

There is a division between evangelicals. Some feel that doing justice is not what the church is supposed to be doing; on the other hand, there is an overreaction to that among many younger evangelicals who would say the job of the church is word and deed equally. I want people to remember that the impetus for helping people comes from the experience of grace.

What part do you see Generous Justice having in the conversations that people like Ron Sider and Tony Campolo have had for several years?

Tony and Ron have been writing great stuff for years, but they're assuming that their readers basically agree about the importance of the church's involvement with justice. My book is trying to move people forward and inspire them without leaving behind folks who have questions about the mission of the church and the relationship of social justice to evangelism.