and that our Gospel came to you not in word only, but also in power, and in the Holy Spirit, and with much assurance. You know what kind of men we showed ourselves to be among you for your sake.
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.