This chapter of Isaiah blew me away this morning; it's great, especially verses 6 & 7:

"Is this not the fast which I choose,
To loosen the bonds of wickedness,
To undo the bands of the yoke,
And to let the oppressed go free
And break every yoke?
"Is it not to divide your bread with the hungry
And bring the homeless poor into the house;
When you see the naked, to cover him;
And not to hide yourself from your own flesh?

And, oh, why can't the church be more like this, verses 8 & 9a:

Then your light will break out like the dawn,
And your recovery will speedily spring forth;
And your righteousness will go before you;
The glory of the LORD will be your rear guard.
"Then you will call, and the LORD will answer;
You will cry, and He will say, 'Here I am '