It is selective. The Samaritans only accepted part of Scripture, the first five books of the Bible called the Pentateuch. They rejected the prophets and the Psalms. The Jews thought they accepted all of Scripture, but they too had a very selective interpretation, depending on their vested interests at the time. It is very dangerous to accept only what we want and disregard the rest.
False worship takes what it is comfortable with, and leaves the rest.
False worship is also ignorant worship. I don't know why we have fallen prey in this country to the belief that being faithful to God means intellectual suicide. Historically some of the most brilliant scholars have been Christians. We have become afraid to question, secretly believing that if we examine our faith too closely it might fall apart. But I am firmly convinced that God can stand up to the test.