For from you has sounded forth the word of the Lord, not only in Macedonia and Achaia, but also in every place your faith toward God has gone forth; so that we need not to say anything.
The church in God, the church in Jesus Christ. And presently Paul is going to be talking about the power of the Holy Spirit with which the message came to them in much assurance. So again, the Father, the Son, the Spirit in which the church was established.