Satanic temptation enters mainly, if not exclusively, in the form of thought.
When Satan temps people. he does not attach a label saying, This is Satanic temptation!
If people knew it was of Satan they would resist it.
No, he sneaks in stealthily without causing a ripple.
All his temptations are formulated so as not to easily arouse the Christians.
He does not want them to suspect him; he would rather have them sleep on.
So he surreptitiously injects a thought into their mind.
Once they accept it, it has become a foothold on him.