"When one who is supposed to be led and taught by God turns out of the way, because of self-confidence, many follow his example. His false step may result in misleading thousands. 7T 200.1"
"Let them alone: they be blind leaders of the blind. And if the blind lead the blind, both shall fall into the ditch."
Both passages warn about the dangers of following those who are misguided or self-confident, leading others astray. The 'blind leading the blind' analogy fits the scenario described by EGW.
"“A certain man had a fig tree planted in his vineyard; and he came and sought fruit thereon, and found none. Then said he unto the dresser of his vineyard, Behold, these three years I come seeking fruit on this fig tree, and find none: cut it down; why cumbereth it the ground? And he answering said unto him, Lord, let it alone this year also, till I shall dig about it, and dung it: and if it bear fruit, well: and if not, then after that thou shalt cut it down.” Luke 13:6-9 . 7T 200.3"
"He spake also this parable; A certain man had a fig tree planted in his vineyard; and he came and sought fruit thereon, and found none. Then said he unto the dresser of his vineyard, Behold, these three years I come seeking fruit on this fig tree, and find none: cut it down; why cumbereth it the ground? And he answering said unto him, Lord, let it alone this year also, till I shall dig about it, and dung it: And if it bear fruit, well: and if not, then after that thou shalt cut it down."
Ellen White directly references Luke 13:6-9 in this passage.