An interpreter must be qualified and must give an oath or affirmation to make a true translation.
W.va. R. Evid. 604
COMMENT ON RULE 604
Rule 604 is taken verbatim from it federal counterpart. The rule is substantively the same as the current state rule but is organized differently for greater clarity. This rule implements requirements contained in West Virginia Code § 57-5-7 and § 5-13 A-8 as well as West Virginia Rule of Criminal Procedure 28.