'Church of God' in the Bible

to the church of God at Corinth, to those who are consecrated in Christ Jesus, called to be saints, as well as to all who, wherever they may be, invoke the name of our Lord Jesus Christ, their Lord no less than ours:

Put no stumbling-block in the way of Jews or Greeks or the church of God.

What! have you no houses to eat and drink in? Do you think you can show disrespect to the church of God and put the poor to shame? What can I say to you? Commend you? Not for this.

For I am the very least of the apostles, unfit to bear the name of apostle, since I persecuted the church of God.