Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Its longevity testifies to its worth.

I am a Lutheran pastor. Forty years ago I used Machen as the first year text by which I learned New Testament Greek. Over the years, I have used this text to teach a few interested persons New Testament Greek one-on-one. I tried another text once, but its arrangement of subjects seemed out of place. For me, the great feature of Machen is the numerous exercise sentences at the end of each chapter. Too many first year texts provide the students with too few exercise sentences by which they can practice what they have learned.It is not really a book for self-study. But, with the help of a teacher who has studied New Testament Greek, it is simply the best book available after its nearly 80 years in print. That alone speaks much in its behalf.