The title "Church of God" is of tremendous significance for the letter because of Paul's intent to make a major statement, Namely, that there is such a thing as the Church of God.
This Church of God is in Christ, who is known by the human name of Jesus. He is the Lord, and all who call upon his name regard him as Lord.
God, who has called you into fellowship with His Son
Paul writes to the "Church of God" in Corinth. But his letter is not only addressed to the local situation but to the whole people of God - Christians.
This universality is indicated by Paul's reference to himself not as a Missionary or Rabbi or Preacher, but as an Apostle.
Paul claims that although he is one "untimely born", yet, he participates in Apostleship. He is not lessor than the Eleven +one. He is equal to them. This, he states, is affirmed by the Corinthians. Paul's testimony about Jesus is confirmed in them. 1 Cor. 1:6
They are a people whom God, through the apostolic ministry of Paul, has called into fellowship. This fellowship is not simply the Jewish Temple, or Synagogue, or identification with Israel. Rather, it is a new creation, a new revelation of "fellowship."
It is a fellowship in Jesus and not connected merely to a cult of personality- verses 12-14. It a relationship of faith based solely on Christ-Jesus who is our wisdom from God. V. 30.
Pauls insight is revolutionary. He transcends the "norm" and ventures forward into the "New". He is quick to dec;are that there was nothing inherently wrong with the "old". However, the perspective and the answers of the "old" do not adequately address the new situation.
This wisdom is a secret revealed not to those whose mind is earth bound but it is a secret revealed to those who are spiritual. Chap.2:6ff.
Paul, claiming direct from God spiritual authority, (2:4) says that believers share in secret wisdom, the wisdom direct from God, a secret wisdom revealed in the life of Jesus of Nazareth and preached by Paul.
This secret wisdom gives the believers an advantage over others who are earth bound because they have the mind of Christ. 2:16.