Mark 16:15-20

And he said to them: "Go forth to the whole world and preach the Gospel to every creature. Whoever will have believed and been baptized will be saved. Yet truly, whoever will not have believed will be condemned. Now these signs will accompany those who believe. In my name, they shall cast out demons. They will speak in new languages. They will take up serpents, and, if they drink anything deadly, it will not harm them. They shall lay their hands upon the sick, and they will be well." And indeed, the Lord Jesus, after he had spoken to them, was taken up into heaven, and he sits at the right hand of God. Then they, setting out, preached everywhere, with the Lord cooperating and confirming the word by the accompanying signs.