“Then said David to the Philistine, Thou comes to me with a sword, and with a spear, and with a shield: but I come to thee in the name of the Lord of hosts”- 1 Samuel 17:45
The Lord of hosts is debatably the most popular name for God in the Old Testament, being used some 235 times; it is even found twice in the New Testament. And we see from David's challenge to Goliath the awe-inspiring, fear-inducing, courage-producing implications of this name.
First, it is a reminder that, no matter how lonely we may feel at the moment, God has many servants on earth. This should encourage us to know there is a mighty host engaged in the battle with us; this should remind us that there are many of his people who yet need to be disciplined; and this should humble us to recognize that God is not dependent upon our meager efforts to advance his vast kingdom.
Second, we are told that the hosts over whom our God rules includes many servants in heaven. As the servant of Elisha learned when his eyes were opened to see the angelic warriors surrounding his enemies, Jehovah is Lord in heaven as well as on earth. It is "with his mighty angels" that Jesus will return one day soon "in flaming fire taking vengeance on them that know not God, and that obey not the gospel" (2 Thessalonians 1:7-8).
Finally, we are to understand that the Lord of hosts, because he has all power, has servants everywhere. God is his own army. He needs no assistance and he will win every battle. Even his enemies unconsciously fulfill his higher purposes. As Charles Spurgeon wrote:
"Say not my soul, 'From whence can God relieve my care? Remember that Omnipotence has servants everywhere.'"- Baptist bible hour.
Lord, strengthen us in the power of Your might, O God. Dress us in Your armor so that we can stand firm against the schemes of the devil. We know that our struggle is not against flesh and blood, but against the rulers, against the powers, against the world forces of this darkness, against the spiritual forces of wickedness in the heavenly places. (Ephesians 6:10-12)
You are our keeper, O Lord, the shade on our right hand. Protect us from all evil and keep our soul. Guard our going out and our coming in. From this time and forever. In Jesus' name, Amen – Cooke