In the Gospel of Matthew Jesus begins his public ministry by ascending a mountail and teaching the people. We are meant to see in Jesus the figure of Moses and the teaching of God on Mount Sinai. What is similar in Jesus and Moses is that God calls the lowly of the earth to be the light to the nations, and the qualifications of being blessed of God is the exact opposite of the expectations of the world.
God called the people of Israel to be his own, a choice that is utterly shocking in the context of the ancient world. Israel was in the bondage of slavery at the hands of the powerful kingdom of Egypt. Throughout Israel's history she stands as a lowly nation in comparison to the great empires of the ancient world: Babylon, Assyria, Greece, and Rome. The prophet Zephaniah reminds the Israelites of this calling in an attempt to return them to obedience to God's law. Captivity in each age led to the temptation to compromise with the larger culture, and it led to divisions within the community. Zephaniah hoped for a renewal of God's people in his day, and yet the prophet despairs of that hope and looks to the day of the Messiah when a faithful remnant will remain to pasture the people of God to a new period of glory.
Paul continues the theme of God calling the lowly in his own ministry. The first Christians were not powerful people by any stretch of the imagination. Corinth was one of the most prominent cities of the ancient world, growing wealthy by sea trade and pilgrims who flock to the pagan temples for ritual prostitution. Christians struggled in such a culture, and compromise with the world was the route some attempted. This led to divisions within the Christian community, divisions that were present to the people of Israel in the time of Zephaniah. Paul uses the same message to return people to fidelity to their baptismal call.
Matthew writes his gospel to a community struggling with the same compromise that Zephaniah and Paul experienced. The Jewish synagogues were beginning to expel the followers of Jesus from the Jewish community. Prior to that point the Roman Empire regarded the Christians as a sect of Judaism, and thus the Christians were granted the dispensation from offering sacrifices to the Emperor, a privilege given only to the Jewish people. If the Christians were not part of the synagogue, they were then required to offer these sacrifices, which of course their faith would not permit them to do. Matthew's community felt the pressure to compromise on two fronts: compromise with the synagogue on the identity of Jesus, and compromise with the Roman Empire on offering sacrifice to the Emperor.
Matthew, then, returns to the theme of what it means to be blessed by God. All of these attributes are consistent with the themes of Zephaniah and Paul, and they stand in radical opposition to the standards of the world. As a result of historical circumstances, Christians have come to expect a sort of worldly preference: legal protection, special status, material comfort, and the like. The fact of our historical preference over the centuries has caused us to forget about what truly defines the child of God. The history of the people of God is opposition from the world and being the lowly ones of the earth. Fidelity to God is solidarity with the poor and care for others, as the Psalmist states in the responsorial Psalm: "The Lord keeps faith forever, secures justice for the oppressed, gives food to the hungry." This is our faith; this is our call.
After Jesus' baptism he began his public ministry by reminding the people of God of their identity and calling. As we seek to be more faithful to our baptismal call, we seek the Lord's help in uniting our hearts to the opening prayer for today's Mass: "Let us pray, joining in the praise of the living God, for we are his people. Father in heaven, from the days of Abraham and Moses until the gathering of your Church in prayer, you have formed a people in the image of your Son. Bless this people with the gift of your kingdom. May we serve you with our every desire and show love for one another even as you have loved us. We ask this through Christ our Lord. Amen."