Believe That Man Doth not Comprehend All Things Which the Lord Can Comprehend

King Benjamin instructs his people to believe in God (and act according to that belief) as a means towards salvation.

“Believe in God; believe that he is, and that he created all things, both in heaven and in earth; believe that he has all wisdom, and all power, both in heaven and in earth; believe that man doth not comprehend all things which the Lord can comprehend. And again, believe that ye must repent of your sins and forsake them, and humble yourselves before God; and ask in sincerity of heart that he would forgive you; and now, if you believe all these things see that ye do them.” (Mosiah 4:9-10)

Questions:

-Is it possible to intentionally believe in God? Or, can true belief in God only follow a certain degree, or amount, of evidence.

-When a person chooses to believe in a perfect God (the Author of all that is good) can the Holy Spirit witness to his or her soul that the belief is truth?

-Is there any greater evidence than that provided by the power of the Holy Ghost to testify of truth?