We are held responsible for our prayers, and as we have not learned how to pray we often inflict our conditions upon those for whom we pray. A group of people praying about a sick bed can sometimes drive out the real personality from the body and allow an obsessing entity to enter.
When we pray we often visualise the person for whom we pray; but we fail to realise that we send our own atmosphere to them as well. This can frequently bring greater disorder than ever.