This economy, this periodic preparation, is already present in the Old Testament. So Ignatius says: “Judaism has believed towards Christianity.” Here again we have the relationship towards fulfillment. The Christ, the new man, has appeared. He is perfect. The disruptedness of the old man is overcome and death is dissolved. This leads to Christology.
Now you will find that here already, some of the defects arise which will become overwhelming when we come to the Trinitarian and Christological discussions. So I ask you to follow very carefully each mentioning of the Christological problem in the earlier periods, otherwise it is impossible to understand anything of the dogma of the early Church, which has two parts: Christ in heaven (the Trinitarian dogma) and Christ on earth (the Christological dogma).