Don’t believe everything you hear at face value. Check it out thoroughly so you can know it is true. Read: Acts 17:11 (click on link below and read verse 11. Look at verse 12 too if you want more information).
http://bibleresources.bible.com/passagesearchresults2.php?passage1=Acts+17&book_id=51&version1=51&tp=28&c=17