"For behold, He who forms mountains, And creates the wind, Who declares to man what his thought is, And makes the morning darkness, Who treads the high places of the earth-- The Lord God of hosts (Jehovah Tsebaioth) is His name." Amos 4:13 (NKJV)
Je-HO-va Se-baw-OT is how you pronounce it. This is perhaps one of the characteristics of God that is most ignored or unknown to many believers. When God reveals himself as the "Lord of Hosts", He is presenting Himself as the Commander of heavenly armies, a Warrior God, a God who fights for us and through us.
Knowing God this way requires us to understand that we are in a battle - a battle "against evil rulers and authorities of the unseen world, against mighty powers in this dark world, and against evil spirits in the heavenly places" (Eph. 6:12). God reveals Himself as the Lord of Hosts only to those who engage their lives in His mission - who set their hearts and minds on living a pure life and advancing His Kingdom.
I have learned more about this part of God's character in the last two years, than probably any other part. When our family moved to Silicon Valley with an aggressive vision of planting churches and spreading the love of God in a dark place, we soon found out that this was going to be quite a battle (see my post on "demonic tricks"). Most Christians today don't even see their need for Jehovah Tsebaioth, since they are Christians merely because they want to make it to Heaven or just have their sins forgiven.
It is so much more exciting to engage in God's mission for our lives. To do battle, to seek victory, to move forward in our walk with Christ. When we declare war against sin, when God's love compels us to spread His message - we will soon find that the Lord of Hosts not only sends His armies of angels to fight for us, but He also equips us with great strength to accomplish His mission and live with purpose. When you get tired of fighting on your own, seek Jehovah Tsebaioth, and let God do the fighting for you and through you.
Also read: Joshua 5:13-15, Romans 9:29, James 5:4