1 Chronicles 21:15-16

15God sent his angel to destroy Jerusalem. But as the angel started to kill people, the Lord saw what was happening. He decided to stop the punishment that he was causing. He said to the angel who was killing the people, ‘That is enough. Stop what you are doing!’ When the Lord said that, his angel was standing near the threshing floor of Araunah the Jebusite.

16David looked up and he saw the Lord's angel. The angel was standing between the earth and the sky. He had his sword in his hand and it was pointing towards Jerusalem. David and the leaders fell down with their faces towards the ground. They were wearing clothes that were made of rough sackcloth.