Go and proclaim the gospel of Jesus Christ

 “And he said to them, “Go into all the world and proclaim the gospel to the whole creation.” (Mark 15:16 ESV)

Make known the gospel

“Now I make known to you, brethren, the gospel which I preached to you, which also you received, in which also you stand, by which also you are saved, if you hold fast the word which I preached to you, unless you believed in vain.” (1 Cor. 15:1-2) NASB)

And the gospel will be proclaimed to all nations before the end comes

“And this gospel of the kingdom will be proclaimed throughout the whole world as a testimony to all nations, and then the end will come.” (Matt. 24:14 ESV)

Therefore…

“Therefore do not be ashamed of the testimony about our Lord, nor of me his prisoner, but share in suffering for the gospel by the power of God…” (2 Tim. 1:8 ESV)