Isaiah 2:7. “Their land also is full of silver and gold, neither is there any end of their treasures; their land is also full of horses, neither is there any end of their chariots:
Two more national sins: The amassing of silver and gold, and never having enough; the amassing of horses and chariots for war, and never having enough.
God had specifically warned Israel against against amassing horses for gain and for warfare (Deut. 17:16), knowing that doing so would turn their faith away from Him and to their own accomplishments.
There is no sin in silver and gold; there is no sin in preparing for war. The sin lies in the “never having enough” part of this equation. What Israel will learn, to their hurt, is that other countries will have even more money, more materials of war. They will also learn that when God removes His hand of blessing because of their sin, it will not matter how much money or how many horses and chariots they have. Without God’s blessing, success is elusive.