his is here called a service [singing the praises of God], and the persons employed in it workmen. Not but that it is the greatest liberty and pleasure to be employed in praising God: what is heaven but that? But it intimates that it is our duty to make a business of it, and stir up all that is within us to it; and that, in our present state of corruption and infirmity, it will not be done as it should be done without labor and struggle. We must take pains with our hearts to bring them, and keep them, to this work, and to engage all that is within us."
Matthew Henry on 1 Chronicles 25