Read the following context and choose the best option to answer the question.
Context: Friends , A few years ago , I became weary of the Purpose Driven Life . We had gone through the program at my church , read the book , preached the sermons . When it was all done , I felt no better and our church did not grow . I felt dirty for using someone else 's sermon outlines .
Question: Why did I feel dirty for using someone else 's sermon outlines ?
Options: 
- Because I became weary of the Purpose Driven Life .
 - Because we read the book .
 - Because it was a few years ago .
 - Because I was supposed to do them myself .


Because I was supposed to do them myself .