Broadening my horizons is slightly patronising, don't you think?
I'm not trying to convert you from religion to atheism and nor should it work the other way - your beliefs are entirely your prerogative.
Reading any of those religious works would not provide me, as an atheist, any answers as to why God would work in such a way. After all, they haven't provided the answers to you, by your own admission.
I don't really have "a lot of questions"; they were all rhetorical. I never expected nor received any rational answers as to why God would allow such atrocities because I don't believe this specific act was anything other than a deranged lunatic.
To suggest to the grieving that there may have been some higher power at work, one which we could not possibly understand, is fairly insulting - in my humble opinion.
Current: 2013 F10 520d M-Sport, Professional Media, Visibility Pack, Reversing Camera, DAB
Previous: 2011 F10 520d M-Sport, 2008 320i M-Sport Coupe, 2002 325i, 2001 318i valvetronic, 1998 318i, 1996 525i, 1990 Porsche 944S2