Fundamentally, the strength of G-d exists in the fact that He is, that He is the only true power, His will is the only true will, and everything which occurs only occurs through His activity. This is defined by understanding that He alone exists, He alone has the power and the ability to do something, only His will can truly exist and only He is involved in actually affecting things in reality. Only His force moves all time and history. Understanding the oneness of the Creator can be attained by diligently learning the Torah, the prophets, their prophecies, and how to know who is a real prophet.