ESV: And from the age of fifty years they shall withdraw from the duty of the service and serve no more.
NIV: but at the age of fifty, they must retire from their regular service and work no longer.
NASB: But at the age of fifty years they shall retire from service in the work and not work anymore.
CSB: But at fifty years old he is to retire from his service in the work and no longer serve.
NLT: and they must retire at the age of fifty.
KJV: And from the age of fifty years they shall cease waiting upon the service thereof, and shall serve no more:
NKJV: and at the age of fifty years they must cease performing this work, and shall work no more.