My belief of free will comes from Genesis and the garden of Eden. God gave Adam and Eve an option to obey him or not, that is free will. That was to allow Love to be possible and was Gods plan from before the beginning of Creation. You can not have Love without volition and free will. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.