God responds to such thinking bluntly. God is not unhappy about sacrifices, but about how the people are treating each other -- they cheat each other, they lie to each other, they use force and intimidation to get their way. For this way of life -- in addition to their idolatry -- God will punish them.
[links to Bible Gateway open in a new window]Reading the Bible in Its Entirety
If you are planning to read the Bible in its entirety, you should read Micah 6 today.