'Messenger' in the Bible

For thus says the Lord of hosts, “After glory He has sent Me against the nations which plunder you—for he who touches you, touches the apple of His eye.

Behold, I will wave my hand over them and they shall become plunder for their own slaves. Then you shall know (recognize, understand fully) that the Lord of hosts has sent Me.

Many nations shall join themselves to the Lord in that day and shall be My people. And I will dwell in your midst, and you shall know (recognize, understand fully) that the Lord of hosts has sent Me to you.

“The hands of Zerubbabel have laid the foundations of this house, and his hands will finish it. Then you will know (recognize, understand fully) that the Lord of hosts has sent me [as His messenger] to you.