Josef Goebbels, Hitler’s minister of propaganda, wrote:
“It would not be impossible to prove with sufficient repetition and a psychological understanding of the people concerned that a square is in fact a circle. They are mere words, and words can be molded until they clothe ideas and disguise” (emphasis added). This is how the greater part of the population of Germany was led to call good evil and evil good.
Repetition is a primary principle of mesmerism. Any thought that I think over and over again becomes a belief. Any belief that I perpetuate will eventually, irresistibly, become a reality to me.
This is why the third and last of Mrs. Eddy’s “Daily Duties” is so important: “Alertness to Duty – It shall be the duty of every member of this Church to defend himself daily against aggressive mental suggestion…”
Hitler and Goebbels were masters of agressive suggestion, and one of their most effective and aggresive propaganda tools was repetition.
The apostle Paul in the second chapter of II Thessalonians speaks of the antichrist as gaining power through deception and through the deceivableness of his followers
A deceiver is only as strong as the deceivability, or suggestibility, of his audience. The human mind is suggestible, and this is why it is so important to put off the human mind and “put on the Mind of Christ”: https://www.kingjamesbibleonline.org/Bible-Verses-About-The-Mind-Of-Christ/
“This book of the law shall not depart out of thy mouth; but thou shalt meditate therein day and night, that thou mayest observe to do according to all that is written therein: for then thou shalt make thy way prosperous, and then thou shalt have good success.” (Joshua 1:8.)
“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.)