Mark 16:14-18 (NKJV)
14 Later He appeared to the eleven as they sat at the table; and He rebuked their unbelief and hardness of heart, because they did not believe those who had seen Him after He had risen.
15 And He said to them, “Go into all the world and preach the gospel to every creature.
16 He who believes and is baptized will be saved; but he who does not believe will be condemned.
17 And these signs will follow those who believe: In My name they will cast out demons; they will speak with new tongues;
18 they will take up serpents; and if they drink anything deadly, it will by no means hurt them; they will lay hands on the sick, and they will recover.”