7 The number of them, with their brothers who were instructed in singing to Yahweh, even all who were skillful, was two hundred eighty-eight.
*Minor differences ignored. Grouped by changes, with first version listed as example.
With their brethren - i. e., "with others of the tribe of Levi." Each son of Asaph, Jeduthun, and Heman, was at the head of a band of twelve skilled musicians, consisting partly of his own sons, partly of Levites belonging to other families 1 Chr. 25:9-31. The 24 band-leaders, together with their bands, formed a body of 288 persons (24 x 12 =288) Besides these, we hear of there being above 3,700 singers, who were probably divided, like the trained musicians, into 24 courses, which must have contained about 155 each 1-Chronicles 23:5.
Two hundred fourscore and eight - That it twelve classes of twenty-four Levites each; for two hundred and eighty-eight divided by twelve quotes twenty-four.
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.
Cunning - Who were so skilful that they were able to teach others; and together with their scholars, made up the four thousand mentioned 1-Chronicles 23:5.
*More commentary available at chapter level.