The sphere of Satan’s operation is in man’s thought life.
He will inject a thought, an imagination, which appears to be your own.
Under this deception, you accept it and use it as if it were yours, though in actuality it is his.
Do remember that many things in the life of a Christian begin with speculations or imaginations.
Many sins are first committed in the imagination of the mind.
Many unpleasantnesses among brothers and sisters arise from these fancies.