Romans 1:15; Romans 10:15; Romans 15:20
So, as much as in me is, I am ready to preach the gospel to you that are at Rome also.
And how shall they preach , except they be sent ? as it is written , How beautiful are the feet of them that preach the gospel of peace, and bring glad tidings of good things!
Yea, so have I strived to preach the gospel , not where Christ was named , lest I should build upon another man's foundation: