Following are a number of back-translations as well as a sample translation for translators of 1 Chronicles 15:12:

• Kupsabiny: “He said to those people, ‘You (plur.) are leaders in the clan of Levi. So, cleanse yourselves with your relatives so that you may carry the Box of the God of Israel to come and stay where I have prepared for it.” (Source: Kupsabiny Back Translation)
• Newari: “Then [he] spoke to them like this, "You are the leaders of your Levite families. You are to make yourselves and your relatives clean. Then bring the Ark of the Covenant of the LORD of the God of Israel to put it in the place I have prepared for it.” (Source: Newari Back Translation)
• Hiligaynon: “He said to them, ‘You (plur.) are the leaders/[lit. heads] of the families who were descendants of Levi. You (plur.) must-be-cleaned and your (plur.) fellow descendants of Levi, so-that you (plur.) can-bring the Box of the LORD, the God of Israel, to the place I have-prepared for it.” (Source: Hiligaynon Back Translation)
• English: “David said to them, ‘You are the leaders of the clans descended from Levi. You and the other descendants of Levi must purify yourselves, in order to be able to do this special work for Yahweh. You must bring the Sacred Chest of Yahweh, the God of us Israelis, up to the place that I have made for it here in Jerusalem.” (Source: Translation for Translators)