'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.

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.