In our latest podcast we talk about Adam. Doesn't he complicate evangelism? Why discuss him?
The first thing to say is that 321 is not meant to be an inductive argument. It's not about getting agreement from people about the basics and working towards Jesus. It's simply about inviting the non-Christian into the Christian story and asking them to look around it from the inside.
I certainly do not expect agreement at the outset (otherwise I wouldn't begin with THREE!) What I want to do is paint a picture and ask the non-Christian to suspend disbelief for a few minutes while I explain the gospel.
Once I've explained the logic of Adam and Christ (perhaps from 1 Corinthians 15:21-22), then I can say something along the lines of...
"Do you understand the logic of the story - i.e. that Adam fell but Christ rose? If you get the logic then, sure, I completely understand your problem with Adam. But let's talk about Christ because, as you can see, the two are linked. I know you don't believe it, but the central Christian claim is that Christ rose. Let's examine whether Christ rose or not (from 1 Corinthians 15). If He rose, then Adam fell."
I am well aware that Adam is not a great stepping stone to Christ :) But then, nothing is a good stepping stone to Christ. Christ makes the bridge Himself.
Once again... we begin with THREE (and with creation and Adam) not because we're seeking to get agreement from the outset. We begin here because that's where the Christian story begins. And we beg the non-Christian's indulgence to let us finish the story.
If the non-Christian wants verification of the story's truth - we point to Christ and His resurrection from the dead. If Christ rose, the story is true (and Adam fell). If He didn't rise then the story is just a fairytale and we can forget it all.
In all this I'm saying "Don't get too hung up on the Adam question. Adam does not vindicate the story, the story vindicates Adam". But as we discuss these things, I find that non-Christians really get the emotional impact of Adam. Seeing humanity as a family, seeing how the whole family tree has been corrupted from the outset, seeing the disconnected state we're all naturally in, this all makes a heck of a lot of emotional sense. The wonder of Christ entering in to this mess to address our problems from the inside. That's a wonderfully attractive proposition. Play on that. And then let Jesus vindicate Adam (not the other way around.)