Just wondering why a shield is considered a barb wire? Doesn't it just stop harm from touching you? Otherwise it would have no effect as Lionheart says (bad out, good in)? What if it is a smooth shield? Or is it the idea that the bad you sent out will have to go somewhere? Last time I OBE and I asked for protection somehow I saw a mary pendant glowing on our dressing table, which when I picked up filled me with a sense of peace. Is that 'barb wire'? Most other times, I don't bother with protection, trusting in the good, but then I would wonder if it is safe...Genuinly curious as to the concept of shields = barb wire....