Numbers 4:39-41

New International Version

³⁹ All the men from thirty to fifty years of age who came to serve in the work at the tent of meeting, ⁴⁰ counted by their clans and families, were 2,630. ⁴¹ This was the total of those in the Gershonite clans who served at the tent of meeting. Moses and Aaron counted them according to the Lord’s command.