Isaiah 54:16 (King James Bible) behold I have created the smith that bloweth the coals in the fire and that bringeth forth an instrument for his work and I have created the waster to destroy
Here the 1841 compositor accidentally replaced the indefinite article an with the definite article the. The compositor was probably influenced by the multiple use of the definite article in the immediately preceding predicate (“the smith that bloweth the coals in the fire”). This error was removed from the subsequent LDS edition (1849). The King James text has the an.
Summary: Maintain the indefinite article an in 3 Nephi 22:16, the earliest extant reading as well as the reading of the corresponding King James passage in Isaiah 54:16.