Robertson is his book "The White Truth" which was a reponse to a book called "The White Lie" which exposed White's plagairism, Robertson wrote:
""The influence of the spirit of prophecy is woven into the warp and woof of Adventist faith, life and organization . . . What we are as a church is a reflection of our faith in the divine authority evident in the writings of Ellen G. White."
What does SDAism teach about White's "inspiration" ?
Is Ellen White's inspiration equal to that of the Bible?
Her inspiration is equal in quality [p. 8] to the inspiration of the Bible, but the function and purpose of Ellen White's inspiration is different from that of the Bible. A parallel is found in Scripture. The prophet Nathan was as fully inspired as King David, but Nathan's inspiration had a different function from David's. David's inspired writings became a part of the canon of Scripture. Nathan's inspiration did not result in any canonical writings.
One cannot make differences in the quality of inspiration because inspiration is either present or absent, so that various manifestations of it cannot be distinguished by degrees. The Holy Spirit was just as careful in the superintendence of Nathan's inspired messages as in David's writings, although, in harmony with the divine purpose, only the latter were incorporated into the canon.
Ellen White's writings do not function as a standard or rule for doctrine. The Bible does function in this manner. In this sense Ellen White does not have equal doctrinal authority with the Bible.
http://www.whiteestate.org/issues/whitelie.html#bible
According to the White Estate folks, White's writings are of the same quality as Scripture but not for the same purpose. Huh?
My initial impression is that the SDA church, or at least the author of the above quote, does not understand divine inpsiration. The word inspiration in our BIble is a poor translation, IMO, of Theopneustos. It appears that the SDA church is teaching that White's writings are Theopneustos but given for a different function than the Scriptures.
When the Scripture speaks of inspiration it is Theopneustos, God-breathed, or breathed out by God. Whiteestate would do well to remember that what they learned about others being filled with the Holy Spirit and speaking prophetically, they learned from Theopneustos Scripture.
It is then greatly confusing, or worse, double-speak, to say that White's writings/speech is of the same quality as Holy Scripture yet not profitable for doctrine. The fact that the Apostle's words are God-breathed makes them Scripture. If they are saying White's words are of the same quality, then the words should be infallible, inerrant, and Scripture. To make the distinction they did casts doubt on the very Scriptures themselves.