1 Chronicles 25:7

7 Along with their relatives—all of them trained and skilled in music for the LORD—they numbered 288.

Read 1 Chronicles 25:7 Using Other Translations

So the number of them, with their brethren that were instructed in the songs of the LORD, even all that were cunning, was two hundred fourscore and eight.
The number of them along with their brothers, who were trained in singing to the LORD, all who were skillful, was .
They and their families were all trained in making music before the LORD, and each of them—288 in all—was an accomplished musician.

What does 1 Chronicles 25:7 mean?

John Gill's Exposition of the Bible
1 Chronicles 25:7

So the number of them, with their brethren
Who each of them had twelve with them, as after reckoned: that were instructed in the songs of the Lord;
taught how to sing them: [even] all that were cunning;
expert and well skilled in the science of singing: was two hundred and eighty eight;
for there being twenty four classes answerable to those of the priests, and twelve in each class, twelve times twenty four makes two hundred and eighty eight.

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