'Task' in the Bible

For the Lord will rise up as He did at Mount Perazim.He will rise in wrath, as at the Valley of Gibeon,to do His work, His strange work,and to perform His task, His disturbing 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."

Look, I have created the craftsmanwho blows on the charcoal fireand produces a weapon suitable for its task;and I have created the destroyer to cause havoc.