Following are a number of back-translations as well as a sample translation for translators of Leviticus 16:34:

• Kupsabiny: “This is a law that you (plur.) shall keep forever. This ritual is to be done once every year so that the people of Israel can be cleansed from their sins.’
  So. Moses did those matters following how God had told him.” (Source: Kupsabiny Back Translation)
• Newari: “From now on, once every year, this is your law forever that atonement must always be made in this way to cleanse the Israelites from their sins."
  And it was done, just as the LORD instructed Moses.” (Source: Newari Back Translation)
• Hiligaynon: “They must obey these regulations[lit. what-is-to-be-followed] forever/[lit. until whenever]. And they will-do this once each year.
  And this happened according-to what- the LORD -commanded Moises.” (Source: Hiligaynon Back Translation)
• English: “This will be a permanent command/law for you to obey once every year, to enable me to forgive you Israeli people for the sins that you have committed.’
  Moses/I obeyed all those instructions/commands that Yahweh had given to him/me.” (Source: Translation for Translators)