'Angel of the Lord' in the Bible

either three years of famine; or three months to be consumed before your foes, while the sword of your enemies overtakes you; or else three days the sword of the LORD, even pestilence in the land, and the angel of the LORD destroying throughout all the borders of Israel. Now therefore consider what answer I shall return to him who sent me.'"

God sent an angel to Jerusalem to destroy it. As he was about to destroy, the LORD saw, and he relented of the disaster, and said to the destroying angel, "It is enough; now stay your hand." The angel of the LORD was standing by the threshing floor of Ornan the Jebusite.

David lifted up his eyes, and saw the angel of the LORD standing between earth and the sky, having a drawn sword in his hand stretched out over Jerusalem. Then David and the elders, clothed in sackcloth, fell on their faces.

Then the angel of the LORD commanded Gad to tell David that David should go up, and raise an altar to the LORD in the threshing floor of Ornan the Jebusite.

But David couldn't go before it to inquire of God; for he was afraid because of the sword of the angel of the LORD.