'Church of God' in the Bible

to the church of God which is at Corinth, to those who being sanctified by Christ Jesus, are saints by that vocation, to all that any where invoke the name of Jesus Christ, who is both their Lord and ours.

give no offence, neither to the Jews, nor to the Gentiles, nor to the church of God.

what, have you no houses to eat and drink in? or have ye a contempt for the church of God, or is it to insult those who are in want? what shall I say to you? shall I commend such behaviour? I do not approve of it.

for I am the meanest of the apostles, not worthy the name of an apostle, because I persecuted the church of God.