Here, Isaiah speaks of the great hypocrisy and wickedness that was committed in the name of worship and religion. This was something that even the prophet Ezekiel dealt with in Ezekiel 23:39 For when they had slain their children to their idols, then they came the same day into my sanctuary to profane it; and, lo, thus have they done in the midst of mine house. How can anyone living in America today read this and not see the application to the American Christian?!
So much of what is done in church today in the name of worship is not God or Christ centered worship; it is idol worship centered on man's thoughts and desires. The American Christian, and their American church, have chosen their own way with their own traditions and now take great delight in their worshipful abominations. We stand and fight, not for pure doctrine and the power of an undefiled Gospel, but for our traditions and the methods of our idols (past preachers that have been used by God for great things). Few Christians today actually desire the sincere milk and meat of the word; instead, settling for regurgitated thoughts from others. We have now become dogmatic of traditions, and they now are our god and our idol. And we do all of this in the name of the Lord. We do much, but not much good. I wonder today how many of us are hypocritical in our worship, following a delusion, and have missed out on the voice of God as we delight in our religious activities that God considers an abomination?
Proverb 15:8 The sacrifice of the wicked is an abomination to the LORD: but the prayer of the upright is his delight.