Toby Sumpter elaborates on the purpose of worship:
You see, this is actually the first work of the Kingdom here. This is where we lay our ambush; this is where we perform the great air war. This is where we drop our nukes on sin, death, and the devil. Before you fight the battle against anger tonight, before you fight the battle against lust tomorrow, before you fight the battle against laziness on Wednesday, before you fight the battle against lying on Friday, you begin here by asking God to wield His sword on your heart and mind through His Word. You begin here by singing your war songs, believing that God marches before you slaying your enemies, making your path secure. You begin here casting your cares upon the Lord asking Him to move mountains, asking Him to heal the sick, asking Him to remove tyrants, asking Him to raise up the humble and meek. You begin here by feasting at the Lord’s Table, eating and drinking the victory of the Lamb who was slain.
Abraham was promised Canaan, and the He went through the land building altars and calling on the Name of the Lord, and hundreds of years later, Joshua led choirs and trumpets to circle Jericho until the walls came tumbling down. We don’t fight with fists or swords or bombs. We fight by the power of the Spirit. We fight with the Word of God, and we wield the wrecking ball of the Spirit until the walls of unbelief and tyranny and slavery fall down. We fight now. We wage war now.