Definition of "Believe" :

verb: accept as true; take to be true

"I believed his report."

verb: credit with veracity

"You cannot believe this man."

verb: follow a credo; have a faith; be a believer

"When you hear his sermons, you will be able to believe, too."

verb: judge or regard; look upon; judge

"I believe her to be very smart."

verb: be confident about something

"I believe that he will come back from the war."