Day four of the Oscar Pistorius murder trial revealed testimony from one of the first people on the scene.<br/> <br />Neighbor Johan Stipp told the court Pistorius was begging him to save his girlfriend, Reeva Steenkamp.<br/> <br />(SOUNDBITE) (English) WITNESS, JOHAN STIPP, SAYING: (audio over court listening)<br/> <br />"Oscar was crying all the time. He prayed to God to please let her live, she must not die."<br/> <br />The South African Paralympic and Olympic star said he mistakenly shot Steenkamp, thinking she was an intruder.<br/> <br />Stipp told the court that as they waited for the ambulance, he feared Pistorius would take his own life.<br/> <br />(SOUNDBITE) (English) WITNESS, JOHAN STIPP, SAYING: (audio over court listening)<br/> <br />"I remember at one stage while I was outside, and I noticed that Oscar was going up the stairs. It was obvious that Oscar was emotionally very, very upset, and I didn't know the situation in the house, so I thought maybe he was going to hurt himself."<br/> <br />If found guilty of i
