Levites were chosen by God to minister in His Sanctuary, to help priests in the ministry in Temple. In the desert, their ministry was to care about the Tabernacle and its accessories they were carrying. 


In the Temple, they had to keep guard at the gates, watch after the clothes, vessels, lamps, bake bread for offerings, bring wood and water, provide assistance in sacrificing of the animals. Levites were also responsible for the defense of the Sanctuary