'Church of God' in the Bible

To the Church of God in Corinth, to those who have been consecrated by union with Christ Jesus and called to become his People, and also to all, wherever they may be, who invoke the Name of our Lord Jesus Christ-their Master and ours,

Do not cause offence either to Jews or Greeks or to the Church of God;

Have you no houses in which you can eat and drink? Or are you trying to show your contempt for the Church of God, and to humiliate the poor? What can I say to you? Shall I praise you? In this matter I cannot praise you.

For I am the meanest of the Apostles, I who am unworthy of the name of 'Apostle,' because I persecuted the Church of God.