Oh dear! How much illogic can one pack into two sentences?
"We need also to recognize that our very minds were created by God."
Why do we need to? Because you say so. We wouldn't want the house of cards that you live in to come crashing down now would we? Just play along with this bald and unproven assertion and nobody gets hurt!
"We can only use these minds to the extent that He allows, and it is, therefore, utterly presumptuous for us to use them to question Him and His motives."
IF we can only use these minds to the extent "He" allows, THEN "He" allows them to be used to the extent of questioning "Him" and "His" motives, otherwise we would be incapable, in this retarded and hypothetical scenario, of doing so.
"...and it is therefore utterly presumptuous...."
This statement:
a) implies that the conclusion somehow follows logically from the false premises stated. It does not. It is analogous to saying If A, Then B, therefore Q, where A and B have no dependency on Q being true.
b) contains an unnecessary modifier. Something is either presumptuous, or it is not. There is no such thing as "utterly presumptuous" any more than there is a state of "slightly pregnant."
Conclusion: this person is a dolt.