Romford was teeming with people today we I approached the high St. We were blessed with good weather this Saturday and prayed it would continue as such. Todays team consisted of Chuck, Jacob, Jacob's Pastor named Joe, Mario who was a newbie and Myself. We set up and prayed for the day and I began to speak. I preached from Romans 1 about how all men know God exists and suppress this truth. Eventually I had a gentleman heckle me who was wearing a nice suit. I soon recognized that he knew the Bible fairly well but accused me of not telling the truth about Sabbath worship. Eventually he confessed to being a Seventh Day Adventist who had recently been at church.
His major argument rested on this type of statement -
If (P) Jesus said the Sabbath has changed, then (Q) it would have changed. (~P) Jesus never said the day changed,
Ergo (~Q) the day of worship must be Saturday.
This is the fallacy of denying the antecedent - If P, then Q. Not P. Therefore, not Q. (I have also heard JWs and Muslims use this line of reasoning in denying the Deity of Christ).
Needless to say when this error was pointed out to the gentlemen he didn't like it and rather than concede that his reasoning may be at fault he just continued to talk over me and not engage in dialog. Instead I decided to move on swiftly and continue preaching the Gospel and by that time my crowd had tripled in size, Praise God! I concluded my message by explaining the need to repent and turn to Christ in faith as He is the only name by which we can be saved.
Chuck preached too and I handed out tracts. A number of Christians were very encouraged by the preaching. The other team members were also busy chatting and handing out tracts to the public. It was a good day of gospel proclamation and God showed us favor with the civil authorities and crowds. SDG!!