Following are a number of back-translations as well as a sample translation for translators of 2 Chronicles 29:21:

• Kupsabiny: “Seven bullocks, seven rams and seven young sheep were brought for sacrifices that were burned completely. Also seven he-goats were brought to be sacrificed that were for sweeping away sin for the king, the priests and the people of Judah. After that, Hezekiah said to the priests to sacrifice those animals on the altar to/for God.” (Source: Kupsabiny Back Translation)
• Newari: “They brought seven oxen, seven sheep, seven sacrificial lambs, and seven goats for the kingdom, [for] the holy place and [for] Judah. The king gave the command to the priests, descendants of Aaron to offer all these on the altar of the LORD.” (Source: Newari Back Translation)
• Hiligaynon: “They brought seven bulls, seven rams, seven lambs, and seven male goats as an offering for becoming-clean for their kingdom, temple, and for the people of Juda. King Hezekia commanded the priests who were descendants of Aaron to offer those offerings in the altar of the LORD.” (Source: Hiligaynon Back Translation)
• English: “They took with them seven bulls, seven rams, seven male lambs, and seven male goats to be an offering in order that Yahweh would forgive the sins of all the people in the kingdom of Judah, and in order to purify the temple. The king commanded that the priests, who were descendants of Aaron, should offer those animals to be sacrificed to Yahweh on the altar.” (Source: Translation for Translators)