Following are a number of back-translations as well as a sample translation for translators of Numbers 18:15:

• Kupsabiny: “The firstborn child or any firstborn animal that the people of Israel give to me is yours. But something else must be given to replace the firstborn children and the firstborn of animals that are not clean.” (Source: Kupsabiny Back Translation)
• Newari: “The first-born, whether [it is] a person or an animal that is offered to the Lord [it] is yours. Yet if they are first-born sons or the first-born of an unclean animal, you must redeem them.” (Source: Newari Back Translation)
• Hiligaynon: “All the first-born males, either person or animal, which are-offered to me will-be yours (plur.) too. But you (plur.) must cause-to-be-redeemed the first-born male children and the first-born animals that are-considered unclean.” (Source: Hiligaynon Back Translation)
• English: “The firstborn males, both humans and domestic animals, that are offered to me, will be yours. But people must buy back their firstborn sons and the firstborn animals that may not be used for sacrifices.” (Source: Translation for Translators)