Jacob 5

In the Allegory of the Olive Tree, the master of the vineyards asks -

"...Who is it that has corrupted my vineyard?"  (Book of Mormon | Jacob 5:47)

"Is it not the loftiness of thy vineyard—have not the branches thereof overcome the roots which are good? And because the branches have overcome the roots thereof, behold they grew faster than the strength of the roots, taking strength unto themselves."  (Book of Mormon | Jacob 5:48)

Obviously, it is pride that corrupted the vineyard...a warning to all priesthood leaders.