The Bible describes the means God is using to bring salvation to Israel and the nations. No other Old Testament passage probes more deeply into this matter than the so called Servant Songs of Deutero-Isaiah (Isa 40–55). These Servant Songs make unmistakable reference to the spread of salvation through the whole world. The Servant shall carry it to the ends of the earth (Isa 49,6), and he will not stop until righteousness prevails throughout the earth. The coastlands are awaiting his instructions (Isa 42,4).
The fourth Servant Song in Isaiah 53 uncovers the secret of ‘how’ the servant of the Lord shall discharge his mission. This passage depicts the Servant becoming a victim and enduring every kind of mistreatment human mind can devise. However, the Servant at this point shall be acting as a substitute who is incurring the judgment of God which was properly due not only to Israel but to all people and nations. As a substitute for both Israel and the nations, the Servant has to walk the path of suffering to bring them freedom. Moreover, Isaiah 53 describes the nations as Yahweh’s gift to the Servant in return for his willing obedience to suffer death. He achieved the right to bring salvation and healing to all people. In passing, we must note that St. Paul, the Apostle to the Gentiles, grounds his call from God to engage in worldwide mission in these very Servant Songs (Acts 13,47).