'Church of God' in the Bible

Take heed, therefore, to yourselves, and to all the flock, in which the Holy Spirit has made you overseers, to shepherd the church of God which he purchased with his own blood.

to the church of God which is at Corinth; those who are sanctified in Christ Jesus, called to be saints, with all who call on the name of our Lord Jesus Christ in every place, both theirs and ours:

Give no occasions for stumbling, either to Jews, or to Greeks, or to the church of God;

For I am the least of the apostles, who is not worthy to be called an apostle, because I persecuted the church of God.

Paul, an apostle of Christ Jesus through the will of God, and Timothy our brother, to the church of God which is at Corinth, with all the saints who are in the whole of Achaia:

For you have heard of my former way of life in Judaism, how I severely persecuted the church of God, and tried to destroy it.

(but if a man does not know how to rule his own house, how will he take care of the church of God?)