Both a work of theology and psychology, Calvinist revivalist Horatius Bonar guides readers from the universal human need for repentance and faith to the "peace that passes all understanding" that comes from communion with Christ.

Probably there has never been a generation more determined to achieve peace than our own. The multiplicity of organisations which have been formed in recent years to seek to deal with international and civil unrest, industrial strife, and conflicts within the home bear witness to this fact. And yet the situation appears to grow steadily worse. The reason lies in the fact taht men and women have failed as individuals first to make their peace with God, their Maker. From this alone will flow the much sought peace between man and man. Horatius Bonar's long life spanned most of the last century, and for well over fifty years he execised an active and powerful ministry in Scotland.