Against this cultural pressure, which not only threatened the Israelite identity but also the faith in the one God and in his promises, it was necessary to create a wall of distinction, a shield of defence to protect the precious heritage of the faith; this wall consisted precisely in the Judaic observances and prescriptions. Paul, who had learned these observances in their role of defending God’s gift, of the inheritance of faith in one God alone, saw this identity threatened by the freedom of the Christians this is why he persecuted them. At the moment of his encounter with the Risen One he understood that with Christ’s Resurrection the situation had changed radically. With Christ, the God of Israel, the one true God, became the God of all peoples. The wall as he says in his Letter to the Ephesians between Israel and the Gentiles, was no longer necessary: it is Christ who protects us from polytheism and all of its deviations; it is Christ who unites us with and in the one God; it is Christ who guarantees our true identity within the diversity of cultures. The wall is no longer necessary; our common identity within the diversity of cultures is Christ, and it is he who makes us just. Being just simply means being with Christ and in Christ. And this suffices. Further observances are no longer necessary. For this reason Luther’s phrase: “faith alone” is true, if it is not opposed to faith in charity, in love. Faith is looking at Christ, entrusting oneself to Christ, being united to Christ, conformed to Christ, to his life. And the form, the life of Christ, is love; hence to believe is to conform to Christ and to enter into his love. So it is that in the Letter to the Galatians in which he primarily developed his teaching on justification St Paul speaks of faith that works through love (cf. Gal 5: 14).