My pastor told me my fiance is not my husband, and my friends already bought aso-ebi

My wedding is scheduled for September 5th only for my pastor to tell me during a deliverance service this past Sunday that the man I'm engaged to is not my husband. He said if I marry him, not only will the marriage not last, but that evil will befall me. He said the man was not destined for me and if I go ahead I would wish I had not. My parents are scared and are taking the revelation seriously. They are advising me not to marry him but some of my friends have already bought my aso-ebi. It's not like I can't leave the guy but how do I explain it to people and especially my friends? What would you do if you were in my shoes?