'Tasks' in the Bible

“But as for us, Yahweh is our God. We have not abandoned Him; the priests ministering to the Lord are descendants of Aaron, and the Levites serve at their tasks.

You must completely surround the king with weapons in hand. Anyone who enters the temple is to be put to death. You must be with the king in all his daily tasks.”

The singers, the descendants of Asaph, were at their stations according to the command of David, Asaph, Heman, and Jeduthun the king’s seer. Also, the gatekeepers were at each gate. None of them left their tasks because their Levite brothers had made preparations for them.