New Revised Standard Version
for according to the last words of David these were the number of the Levites from twenty years old and upward—

Contemporary English Version
From now on, all Levites at least 20 years old

New American Bible
For by David’s last words the Levites were enlisted from the time they were twenty years old.

Douay-Rheims Bible
So according to the last precepts of David, the sons of Levi are to be numbered from twenty years old and upward.

So according to the last precepts of David, the sons of Levi are to be numbered from twenty years old and upward.

by the last

1 Chronicles 23:3,24 And the Levites were numbered from the age of thirty years, and upwards: and there were found of them thirty-eight thousand men. . . .

2 Samuel 23:1 Now these are David's last words. David the son of Isai said: The man to whom it was appointed concerning the Christ of the God of Jacob, the excellent psalmist of Israel said:

Psalm 72:20 The praises of David, the son of Jesse, are ended.

numbered [heb] numbers