Matthew 28:20

Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway, even unto the end of the world. Amen.

Mark 16:15

And he said unto them, Go ye into all the world, and preach the gospel to every creature.

Romans 1:19

For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek.