'Adding' in the Bible

'And that which he hath sinned against the holy thing he repayeth, and its fifth is adding to it, and hath given it to the priest, and the priest maketh atonement for him with the ram of the guilt-offering, and it hath been forgiven him.

or all that concerning which he sweareth falsely, he hath even repaid it in its principal, and its fifth he is adding to it; to him whose it is he giveth it in the day of his guilt-offering.