"Dear Brother O, I was shown that you were enshrouded in darkness, which was not relieved by rays of light from Jesus. You did not seem sensible of your danger, but were in a state of listless indifference, unfeeling and unconcerned. I inquired the cause of this much-to-be-dreaded condition, and was pointed back for years, and shown that you had not, since you embraced the truth, been sanctified through it. You have gratified your appetite and your lustful passions to the destruction of your own spirituality. I was shown that God had given light through the gifts placed in the church, which would instruct, counsel, guide, reprove, and warn. These testimonies which you have professed to believe were from God, you have not regarded to live them out. To disregard light is to reject it. The rejection of light leaves men captives bound about by chains of darkness and unbelief. 2T 93.1"
"And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil."
Both passages discuss the rejection of light and the preference for darkness. The EGW passage applies this concept to the rejection of prophetic guidance, while the John passage speaks more generally about the rejection of Christ. The thematic parallel is strong.
"Having the understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the blindness of their heart:"
Both passages discuss a state of spiritual darkness and a lack of understanding. The EGW passage elaborates on the cause of this darkness as a rejection of light and indulgence in sin, while Ephesians 4:18 attributes it to ignorance and a hardened heart. The thematic overlap is clear and meaningful.