The events of New Testament realization, as noted, afford validity and meaning to the Old Testament. They not only validate and explain; they are the ground and warrant for the revelatory and redemptive events of the Old Testament period. This can be seen in the first redemptive promise (Gen. 3:15). We have a particularly striking illus(ration in Matt. 2:15: ‘Out of Egypt have I called my son’. In Hosea 11:1 (cf. Numb. 24:8) this refers to the emancipation of Israel from Egypt. But in Matthew 2:15 it is applied to Christ and it is easy to allege that this is an exaniple of unwarranted application of Old Testament passages to New Testament events particularly characteristic of Matthew. But it is Matthew, as other New Testament writers, who has the perspective of organic relationship and dependence. The deliverance of Israel from Egypt found its validation, basis, and reason in what was fulfilled in Christ. So the calling of Christ out of Egypt has the primacy as archetype, though not historical priority. In other words, the type is derived from the archetype or antitype. Hence not only the propriety but necessity of finding in Hosea 11:1 the archetype that gave warrant to the redemption of Israel from Egypt.
In this perspective, therefore, we must view both Testaments. The unity is one of organic interdependence and derivation. The Old Testament has no meaning except as it is related to the realities that give character to and create the New Testament era as the fulness of time, the consummation of the ages. —John Murray, The Unity of the Old and New Testaments