For information regarding why God allows wickedness, see chapter 11 of the book What Does the Bible Really Teach? published by Jehovah's Witnesses.
11 Loko u lava ku tiva leswaku ha yini Xikwembu xi pfumelela vubihi byi ya emahlweni, hlaya ndzima 11 ya buku leyi nge Xana Bibele Yi Dyondzisa Yini Hakunene? leyi kandziyisiweke hi Timbhoni ta Yehovha.