I found this in another thread which I feel explains Unlimited Atonement rather nicely:
"In fact your doctrine [Calvinism], blinds you to the most powerrful reality of the true gospel itself.... That truth being that salvation, healing and deliverance can all be found in the atonement. That Christ came to SAVE ALL, to HEAL ALL, to DELIVER ALL.
For further proof, you need to research the greek word "SOZO". By definition it means to be restored to it's original state, to be made completely whole. Whenever you read about the ministry of Christ in the four gospels, whenever Christ forgave, healed or delivered someone, one word was used to describe all three. That word is "SOZO". That is why Christ often forgave the sins of those who came for healing (ie. "Your faith has made you well. Now go and sin no more!"). The reason why we have lost touch with this biblical reality is that neither the Latin or English (nor most other European) languages have one word that can encompass all three (forgiveness, healing & deliverance) thus when the gospels were being interpreted into these languages the interpreters used which ever word, be it forgiveness, healing or deliverance, according to the context of the scenerio found in scripture.
Now go back and re-read the Gospels applying the concept of SOZO to every instance where you find Jesus forgiving someone, healing someone, or delivering someone. Then you will have no doubts to the reality that Jesus came FOR ALL! Jesus even saw fit to honor the faith of gentiles even at a time when the gospel was given primarily to Jews! All we need to do to accept this truth is to receive the fact that 'God so loved the WORLD He gave His only begotten Son and WHOSOEVER shall believe in Him shall not perish but have everlasting life.' (John 3:16) This is truly what it means to have saving faith!"