{They shall speak with new tongues} (gl(9373)sais lal(8873)ousin
[kainais]). Westcott and Hort put kainais (new) in the margin.
Casting out demons we have seen in the ministry of Jesus.
Speaking with tongues comes in the apostolic era ( Ac 2:3f.  10:46  19:6  1Co 12:28  14 ).