Our little pro-life group has one atheist, and I tell him he’s our secret weapon. People wonder what he’s doing there? He just SEES that abortion is wrong. Don’t need no dogma. Makes them think maybe, since they can’t brush him off as a religious clinger.
But the lies have been spread so thick, so effectively in the past century, that any sincere Christian who writes off those who have not yet seen is completely ignorant of Christ's message, and charge.