Mark 16:17-19 (ESV):
17 And these signs will accompany those who believe: in my name they will cast out demons; they will speak in new tongues; 18 they will pick up serpents with their hands; and if they drink any deadly poison, it will not hurt them; they will lay their hands on the sick, and they will recover.”
"And these signs will accompany those who believe" - is this a universal predicate, independent of time and space, conditioned only on the individual's faith ("those who believe")?
Note: for those interested in the debate of whether the longer ending of Mark is inspired, see What are arguments for the divine inspiration of the longer ending of Mark (Mark 16:9-20)?