Mark 16:14-20 - Jesus Talks To The Apostles
14 Afterward he was revealed to the Eleven themselves as they sat at the table, and he rebuked them for their unbelief and hardness of heart, because they did not believe those who had seen him after he had risen. 15 He said to them, "Go into all the world, and proclaim the Good News to the whole creation. 16 He who believes and is baptized will be saved; but he who disbelieves will be condemned. 17 These signs will accompany those who believe: in my name they will cast out demons; they will speak with new languages; 18 they will pick up serpents; and if they drink any deadly thing, it will not harm them;[note: see Wallace, Exegetical Syntax, 403?6, whether promise or prediction] they will lay hands on the sick, and they will recover."
19 So then the Lord Jesus, after he had spoken to them, was received up into heaven, and sat down at the right hand of God. 20 They went out, and preached everywhere, the Lord working with them, and confirming the word by the signs that followed.