NET
6 Repay her the same way she repaid others; pay her back double corresponding to her deeds. In the cup she mixed, mix double the amount for her.
Darby
6 Recompense her even as she has recompensed; and double [to her] double, according to her works. In the cup which she has mixed, mix to her double.
KJV
6 Reward her even as she rewarded you, and double unto her double according to her works: in the cup which she hath filled fill to her double.