I just read a very good (if not somewhat lengthy) post here on Isaiah Chp. 1. I’ve preached more than once on this text. It’s a harsh reprimand for people that “play church” by doing all the churchy things, but not worshiping in spirit and in truth. If you’ve been reading my weblog, you know how I feel about that. Isaiah mentions all the things they’re doing; the stuff God commanded. But the problem is they have innocent blood on their hands. They live in their sins, and act out the motions, but are not changed people inside. God (through Isaiah) finally tells them to stop doing evil, and learn to do good. Jesus quotes Isaiah when he says “this people love me with their lips, but their heart is far from me.” In Deuteronomy, God says to “circumcise your hearts.” Replace everything in the Isaiah 1 list with singing hymns, praise and worship choruses, powerpoint slides, taking collection, etc. Jesus talked to the Samaritan woman about worshiping in spirit and in truth. Isaiah says that true religion is to visit the widow and the fatherless, an idea echoed in the New Testament. Worship is an outward extension of what’s inside of us, not something we can rehearse until we get it right.