While there is a change of dispensation, there is no rude severing of Old Testament or Gospel revelation from that of the present age. The one flows naturally out of the other, and the ways of God are shown to be perfectly harmonious. This being so in connection with the Old Testament, how much more does the same principle apply in connection with the four Gospels. While fully recognizing their dispensational place, and realizing that our Lord is presented in the three Synoptics as offering Himself as King and the kingdom of Heaven as such to Israel, only to meet with ever-increasing rejection, yet it should be plain to any spiritual mind that the principles of the kingdom which He sets forth are the same principles that should hold authority over the hearts of all who acknowledge the Lordship of Christ. In John's Gospel the case is somewhat different, for there Christ is seen as the rejected One from the very beginning. It is in chapter one that we read, "He came unto His own and His own received Him not." Then based upon that, we have the new and fuller revelation which runs throughout that Gospel of grace, flowing out to all men who have no merit whatever in themselves.
—H.A. Ironside (October 14, 1876 – January 15, 1951, Wrongly Dividing the Word of Truth)