There aren't too many authors that come so highly recommended by the Savior Himself. He told the Nephites:
...ye ought to search these things. Yea, a commandment I give unto you that ye search these things diligently; for great are the words of Isaiah. For surely he spake as touching all things concerning my people which are of the house of Israel; therefore it must needs be that he must speak also to the Gentiles. And all things that he spake have been and shall be, even according to the words which he spake. (3 Nephi 23:1-3)
That's quite the endorsement. Must be pretty important!