Following are a number of back-translations of Revelation 9:15:

• Uma: “[So] he freed them. From long ago those four angels were prepared ahead of time so that at the year and at the month and at the day and at the hour that was set for them, they could kill one third of all mankind.” (Source: Uma Back Translation)
• Yakan: “So-then the four demons were untied. They had been ready beforehand and had been told to wait for this time, this day, this month and this year and now it had come. They should kill one part of the people in the world. Two parts would not be killed.” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “Then the four angels were released. They were prepared beforehand for now so that they might kill a third part of all mankind.” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “And he went and untied-them, because they had been prepared for this exact year and month, day and hour in which to go kill a third of the people.” (Source: Kankanaey Back Translation)
• Tagbanwa: “Well, those four angels referred to were then let go, who were already in readiness, for God had really determined not only the year and the month but the day and hour as well when they would go-and-kill the third part of people here under the heavens.” (Source: Tagbanwa Back Translation)
• Tenango Otomi: “The four angels were released then so that they would kill part of the people who live on earth. But it didn’t come up to half that were killed. This was the work which was determined for them to do when the hour came, the day came, the year came to do it.” (Source: Tenango Otomi Back Translation)