American Standard Version
For by the last words of David the sons of Levi were numbered, from twenty years old and upward.

Amplified® Bible
For by the last words {and} acts of David, these were the number of the Levites from twenty years old and above.

Contemporary English Version
From now on, all Levites at least twenty years old

Darby English Version
For by the last words of David was this [done], -- the numbering of the sons of Levi from twenty years old and upward.

Good News Bible
On the basis of David's final instructions all Levites were registered for service when they reached the age of twenty,

King James Version
For by the last words of David the Levites were numbered from twenty years old and above:

New American Standard Bible
For by the last words of David the sons of Levi {were} numbered from twenty years old and upward.

New International Version
According to the last instructions of David, the Levites were counted from those twenty years old or more.

New King James Version
For by the last words of David the Levites were numbered from twenty years old and above;

N.A.S.B. in E-Prime
For by the last words of David the sons of Levi had become numbered from twenty years old and upward.

Revised Standard Version
for by the last words of David these were the number of the Levites from twenty years old and upward--

Young's Literal Translation
for by the last words of David they `took' the number of the sons of Levi from a son of twenty years and upward,

New English Translation
According to David’s final instructions, the Levites twenty years old and up were counted.¹