'Lord of Hosts' in the Bible

Now this man would go up from his city yearly to worship and to sacrifice to the Lord of hosts in Shiloh. And the two sons of Eli, Hophni and Phinehas, were priests to the Lord there.

She made a vow and said, “O Lord of hosts, if You will indeed look on the affliction of Your maidservant and remember me, and not forget Your maidservant, but will give Your maidservant a son, then I will give him to the Lord all the days of his life, and a razor shall never come on his head.”

So the people sent to Shiloh, and from there they carried the ark of the covenant of the Lord of hosts who sits above the cherubim; and the two sons of Eli, Hophni and Phinehas, were there with the ark of the covenant of God.

Thus says the Lord of hosts, ‘I will punish Amalek for what he did to Israel, how he set himself against him on the way while he was coming up from Egypt.

Then David said to the Philistine, “You come to me with a sword, a spear, and a javelin, but I come to you in the name of the Lord of hosts, the God of the armies of Israel, whom you have taunted.