Advanced Satanic Magick
From JoS Wiki
When performing advanced black magick and working with elemental thoughtforms, advanced poppits and such, it is important to know the difference between "evocation" and "invocation." NEVER invoke the energy to create these beings if they are to merge with a hated one to do destruction! When we invoke energy, this creates a link between ourselves and the victim. The only time to invoke is for love magick when we truly love someone and wish to merge with them.