Berean Study Bible
But at the age of fifty, they must retire from performing the work and no longer serve.

King James Bible
And from the age of fifty years they shall cease waiting upon the service thereof, and shall serve no more:

American Standard Version
and from the age of fifty years they shall cease waiting upon the work, and shall serve no more,

Darby Bible Translation
And from fifty years old he shall retire from the labour of the service, and shall serve no more;

Douay-Rheims Bible
And when they shall have accomplished the fiftieth year of their age, they shall cease to serve:

English Revised Version
and from the age of fifty years they shall cease waiting upon the work, and shall serve no more;

Young's Literal Translation
and from a son of fifty years he doth return from the host of the service, and doth not serve any more,