'Work of the Lord' in the Bible

Then the LORD said, "I'm now going to make a covenant. I'll do miraculous deeds in full view of your people that haven't been done in all the earth or in any nation. All the people among whom you live will see the work of the LORD, because it's an awesome thing that I'll do with you.

Two years and two months after arriving at the site of the Temple of God in Jerusalem, Shealtiel's son Zerubbabel, Jozadak's son Jeshua, the relatives of the priests and descendants of Levi, and everyone else who had left the Babylonian captivity for Jerusalem appointed descendants of Levi who were 20 years old and older to oversee the work of the LORD's Temple.

"The LORD will open his armory, and bring out the weapons of his anger. Indeed, a work of the Lord GOD of the Heavenly Armies will be in the land of the Chaldeans.

The LORD will vindicate us. Come! Let us declare the work of the LORD our God in Zion.

Therefore, my dear brothers, be steadfast, unmovable, always excelling in the work of the Lord, because you know that the work that you do for the Lord isn't wasted.