The special purpose of this Gospel in the canon is to show us Christ in his divine power, destroying the works of satan, and conquering sin and death. More than other Gospels it places prominently before us the work of Christ in behalf of those that are bound by the shackles of satan and are suffering the consequences of sin. We here see the Lion out of the tribe of Juda, conquering and ever to conquer. Mark is the only one of the evangelists that speaks of the future Kingdom of God as coming with power, 9:1. In that way this Gospel has special significance for the Church of all ages. It gives her the blessed assurance that her future is entrusted to One who has shown himself a mighty Conqueror, and who is abundantly able to save to the uttermost all who believe in Him.
L Berkhof, New Testament Introduction (Grand Rapids, MI: Eerdmans-Sevensma Co., 1915), 88.