'Gospel of Christ' in the Bible

Now when I came to Troas to preach the gospel of Christ, and a door had been opened to me by the Lord,

while by the proof afforded by this ministration they glorify God for your obedience to your profession in regard to the gospel of Christ, and for the liberality of your contribution in regard to them and in regard to all;

For we do not stretch ourselves beyond our measure, as though we reached not to you; (for as far as even to you did we come, in the gospel of Christ;)