Andrew Murray (May 9, 1828 - January 18, 1917) was a South African writer, teacher, and Christian pastor. Murray considered missions to be "the chief end of the church." (wikipedia.org)
Review of Andrew Murray's present title by Clara Roberts:
Murray says that where there is much prayer there is much of the Spirit. He has a chapter of Christ as our example of one who intercedes. A moving chapter dealt with God calling people to the ministry of intercession. Although an old book this was an inspiring book.