"Works of romance, frivolous, exciting tales, are, in hardly less degree, a curse to the reader. The author may profess to teach a moral lesson, throughout his work he may interweave religious sentiments; but often these serve only to veil the folly and worthlessness beneath. MH 445.1"
"And no marvel; for Satan himself is transformed into an angel of light."
Both passages discuss the deceptive nature of evil, which can be disguised as something good or moral. The EGW passage speaks of romances that veil folly with religious sentiments, while 2 Corinthians 11:14 speaks of Satan transforming into an angel of light.
"The world is flooded with books that are filled with enticing error. The youth receive as truth that which the Bible denounces as falsehood, and they love and cling to deception that means ruin to the soul. MH 445.2"
"And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved."
Both passages discuss deception and the rejection of truth, leading to negative consequences. EGW expands on the specific medium of deception (books) and its impact, while Paul speaks more generally about rejecting the love of truth.
"Even fiction which contains no suggestion of impurity, and which may be intended to teach excellent principles, is harmful. It encourages the habit of hasty and superficial reading merely for the story. Thus it tends to destroy the power of connected and vigorous thought; it unfits the soul to contemplate the great problems of duty and destiny. MH 445.4"
"Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things."
Philippians 4:8 encourages focusing on positive and virtuous things. EGW's statement warns against fiction, even seemingly harmless fiction, because it distracts from contemplating important matters and developing the mind. This aligns with the principle of focusing on what is true, honest, just, pure, lovely, and of good report.