'Gospel of God' in the Bible

Paul, a servant of Jesus Christ, called to be an apostle, separated to the gospel of God,

That I should be the servant of Jesus Christ to the Gentiles, ministring the gospel of God, that the offering up of the Gentiles may be acceptable, being sanctified by the Holy Ghost.

Have I committed an offence in humbling myself, that ye might be exalted, because I have preached the gospel of God to you at free cost?

and had been shamefully intreated at Philippi, as ye know, we were bold thro' our God to speak to you the gospel of God with much contention.

So, loving you tenderly, we were ready to impart to you not only the gospel of God, but our own souls also, because ye were dear to us.

For ye remember, brethren, our labour and toil: working night and day, that we might not burden any of you, we preached to you the gospel of God.

not answering again, Not stealing, but shewing all good fidelity, that they may in all things adorn the gospel of God our Saviour.

For the time is come for judgment to begin at the house of God: but if it begin at us, what shall the end be of them that obey not the gospel of God?