Doubting that something is God's influence?
Doubting what the Bible says?
Doubting what people tell you the Bible says?
I don't recall anything in the Bible stating we aren't allowed to question what others tell us about God or even questioning God.
I feel that many Christians are afraid to doubt because (1) They've been told or taught that it is wrong to question God, the Bible, preachers, etc. or (2) Their faith is based on what they've been told and if they question that info and find it to be wrong they fear a void.
It's kinda like finding out that one's parents are not always right. (If of course one ever thought their parents were always right.)
If that is one's foundation, then it may get shaken if examined too closely. Many fear losing that foundation.
Why does someone believe you when you say there are four billion stars, but check when you say the paint is wet?