What did Jesus say about New Tongues?

¹⁵ “Go into all the world and preach 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 take up serpents; and if they drink any deadly thing, it will in no way hurt them; they will lay hands on the sick, and they will recover.”

Textual note: Mark 16:9–20, the longer ending of Mark, is absent from some early manuscripts. It is included in the KJV and WEB used here.