Reference: Sabaoth, Lord of
Fausets
Hebrew tsebaot (not Sabbath, an altogether different word), i.e. "of hosts", namely, of the heavenly powers (1Ki 22:19; Ps 103:21; 148:2; Ro 9:29; Jas 5:4, reminding the rich who think the poor have no advocate that the Lord of the whole hosts in heaven is their patron). Implying the boundless resources at His command for His people's good (Ps 59:5). The sabaoth included both the angelic and starry hosts. The latter were objects of the idolatry, hence called sabaism (2Ki 17:16). God is above even them (1Ch 16:26). The "groves" symbolized these starry hosts. In contrast, Jehovah is the Lord of them, therefore alone to be worshipped. The title does not occur in the Pentateuch, nor earlier than 1Sa 1:3, but in the singular Jos 5:14-15.
See Verses Found in Dictionary
And he said, "No; but I am the commander of the army of the LORD. Now I have come." And Joshua fell on his face to the earth and worshiped and said to him, "What does my lord say to his servant?" And the commander of the LORD's army said to Joshua, "Take off your sandals from your feet, for the place where you are standing is holy." And Joshua did so.
Now this man used to go up year by year from his city to worship and to sacrifice to the LORD of hosts at Shiloh, where the two sons of Eli, Hophni and Phinehas, were priests of the LORD.
And Micaiah said, "Therefore hear the word of the LORD: I saw the LORD sitting on his throne, and all the host of heaven standing beside him on his right hand and on his left;
And they abandoned all the commandments of the LORD their God, and made for themselves metal images of two calves; and they made an Asherah and worshiped all the host of heaven and served Baal.
For all the gods of the peoples are idols, but the LORD made the heavens.
You, LORD God of hosts, are God of Israel. Rouse yourself to punish all the nations; spare none of those who treacherously plot evil. Selah
Bless the LORD, all his hosts, his ministers, who do his will!
Praise him, all his angels; praise him, all his hosts!
And as Isaiah predicted, "If the Lord of hosts had not left us offspring, we would have been like Sodom and become like Gomorrah."
Behold, the wages of the laborers who mowed your fields, which you kept back by fraud, are crying out against you, and the cries of the harvesters have reached the ears of the Lord of hosts.