'Once' in the Bible

once he has sinned and acknowledged his guilt—he must return what he stole or defrauded, or the deposit entrusted to him, or the lost item he found,

It is to be prepared with olive oil on a griddle. Once it has been mixed thoroughly, bake it, bring it in pieces, and offer it like a grain offering of broken pieces, a pleasing aroma to the LORD.

If, however, the raw flesh once again turns white, then he must come to the priest.

And this shall be an everlasting statute unto you, to make an atonement for the children of Israel for all their sins once a year. And he did as the LORD commanded Moses.