He understands the power of the WordOfTheLord and does everything possible to prevent us from believing His warnings and appropriating His promises.
The overarching lesson from the incident of the ForbiddenFruit is that we never entertain anything that contradicts the WordOfTheLord.
When we consider our Lord`s interaction with Satan at the end of His 40 day fast, we see Jesus avoiding discussion entirely. Rather, He confronts Satan with the WordOfTheLord.
Interestingly, these are His own Words spoken by prophets under the inspiration of His HolySpirit.
Consideration of Satan`s arguments is evidence of doubt.