Following are a number of back-translations as well as a sample translation for translators of Zechariah 3:4:

• Kupsabiny: “That angel said to the other angels who were standing in front of him, ‘Remove from Joshua these his dirty clothes.’ Then the angel said to Joshua, ‘See, I have washed away your sins from you and I shall give you clean clothes.’” (Source: Kupsabiny Back Translation)
• Newari: “The angel said to those standing before him, "take off his dirty clothes,"
  and he said to Joshua, "see, I have removed your sin, and I will put costly robes on your body."” (Source: Newari Back Translation)
• Hiligaynon: “So the angel said to the other angels who (were) standing before/[lit. in front of] him, ‘[You (plur.)] take-off his filthy clothing.’ Then he said to Josue, ‘I have-taken-away now your (sing.) sins. Now, I will-clothe you (sing.) with new clothes.’” (Source: Hiligaynon Back Translation)
• English: “The angel said to those other angels who were standing in front of him, ‘Take off his filthy clothes!’
  After they did that, the angel said to Joshua, ‘Look! I have taken away the guilt of your sins, and I will put beautiful clothes on you.’” (Source: Translation for Translators)