'Double' in the Bible

For we write you nothing other than what you read and understand [there is no double meaning in what we say]. And I hope you will [accurately] understand [divine things] until the end;

It was with this confidence that I planned at first to visit you, so that you might receive twice a token of grace;

Repay to her even as she has repaid others, and pay back [to her] double [her torment] in accordance with what she has done; in the cup [of sin and suffering] which she mixed, mix a double portion [of perfect justice] for her.