TSK · Exodus 30:14

from twenty years old and upward, all who are able to go out to war in Israel. You and Aaron shall number them by their divisions.

The children of Reuben, Israel's firstborn, their generations, by their families, by their fathers' houses, according to the number of the names, one by one, every male from twenty years old and upward, all who were able to go out to war;

"Take a census of all the congregation of the children of Israel, from twenty years old and upward, by their fathers' houses, all who are able to go forth to war in Israel."

The shekel shall be twenty gerahs. Twenty shekels plus twenty-five shekels plus fifteen shekels shall be your mina.