1 Chronicles 25:7

And the number of them after their brethren, those instructed to sing to God, every one that understood [singing] was two hundred and eighty-eight.

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, with their brothers who were instructed in singing to Yahweh, even all who were skillful, was two hundred eighty-eight.