'Task' in the Bible

For the Lord will rise up, as he did at Mount Perazim, he will rouse himself, as he did in the Valley of Gibeon, to accomplish his work, his peculiar work, to perform his task, his strange task.

he says, "Is it too insignificant a task for you to be my servant, to reestablish the tribes of Jacob, and restore the remnant of Israel? I will make you a light to the nations, so you can bring my deliverance to the remote regions of the earth."