Following are a number of back-translations as well as a sample translation for translators of 2 Chronicles 30:17:

• Kupsabiny: “The people who had not cleansed themselves for this festival were many. Many of those people came from Ephraim, Manasseh and Zebulun. So, the Levites slaughtered for all those people the lambs for the Festival of Passover. After that, king Hezekiah asked/prayed for those people, ‘Oh, God, you who are good, forgive every person” (Source: Kupsabiny Back Translation)
• Newari: “Since many people had not purified themselves the Levites had to kill the sacrificial lambs for the Passover festival for all those who were impure before the LORD, who were not able to purify their own sacrificial lambs.” (Source: Newari Back Translation)
• Hiligaynon: “Because many of the people there had- not -cleansed themselves, the Levites were the-(ones-who) slaughtered their sheep so-that it can-be-offered to the LORD.” (Source: Hiligaynon Back Translation)
• English: “Many people in the crowd had not purified themselves, and therefore they were not able to kill the lambs and dedicate them to Yahweh. So it was necessary for the descendants of Levi to kill the lambs for them.” (Source: Translation for Translators)