1 Chronicles 23:3-5

Thomson(i) 3 and the Levites were numbered, from thirty years old and upwards; and the number of them by their poll, amounted to thirty eight thousand men. 4 Of these, twenty four thousand were for the works for the house of the Lord; and six thousand were scribes and judges; 5 and four thousand were guards of the gates, and four thousand were to praise the Lord with musical instruments, which he had made for praising the Lord.