Ira L Milligan 
Ask for the Angel [EPUB ebook] 

The Bible teaches that angels are available to assist us in nearly everything we do. Specific angels perform specific tasks but all of them are available for the asking because the Bible says they are all ministering spirits sent to minister for those who will inherit salvation. Even so, we cannot take their ministry for granted. There are certain things we must do to qualify for their help. This book teaches how to gain their assistance in all of our endeavors, and how to minister with them for the Lord.