'Preach the Gospel' in the Bible

Paul, a servant of Christ Jesus, a called apostle, set apart to preach the gospel of God,

So, according to my ability, I am ready to preach the gospel to you also in Rome.

For Christ sent me not to baptize, but to preach the gospel; not with wisdom of speech, lest the cross of Christ should be made of no effect.

In like manner also did the Lord ordain that they who preach the gospel should live from the gospel.

What then is my reward? It is that, when I preach the gospel, I may make the gospel free of charge, that I use not to the full my right as a preacher of the gospel.

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

so that we may preach the gospel in the regions beyond you; not boasting, in anothers line, of things made ready to our hand.