'Lord of Hosts' in the Bible

And David arose, and went with all the people that were with him from Baale of Judah, to bring up from thence the ark of God, whose name is called by the name of the LORD of hosts that dwelleth between the cherubim.

And as soon as David had made an end of offering burnt-offerings and peace-offerings, he blessed the people in the name of the LORD of hosts.

Now therefore so shalt thou say to my servant David, thus saith the LORD of hosts, I took thee from the sheep-cote, from following the sheep, to be ruler over my people, over Israel:

And let thy name be magnified for ever, saying, The LORD of hosts is the God over Israel: and let the house of thy servant David be established before thee.

For thou, O LORD of hosts, God of Israel, hast revealed to thy servant, saying, I will build thee a house: therefore hath thy servant found in his heart to pray this prayer to thee.