The gospel is a message about redemption, not about life's purpose.I have nothing but respect for McArthur, but this statement is nonsense. If it were true, it would indeed make a pretty good slam on Warren's premise; but it is no more than a soundbyte, and a meaningless one at that.
I can see how some would see this as a petty argument from the silly issues that are being raised. I'm sure there is some valid criticism against TPDL, so why not raise that instead?
If the Gospel isn't the Good News of what Christ has done for humanity, what is it?