There is a classic scene from the Avengers movie where the villian Loki asserts himself as a god in a confrontation with the Hulk. Undeterred by this self-confessed god, the Hulk threw Loki around like a ragdoll, declaring him to be a "puny god."
How big is your "God"? Scripture describes the Creator of the Universe as a Mighty God (Joshua 22:22), a Powerful God (Joshua 4:24), an Awesome God (Deuteronomy 7:21). Imagine if God's greatness is measured by the level of our faith? In most cases He too would be seen as a puny god! While God's greatness is not dependent upon our faith, our faith will determine how much of His greatness we experience. If we believe in a great God, we can expect great things!
The prophet Isaiah saw God "high and exalted" and declared Him to be "the Lord Almighty." His vision of an Almighty God empowered him to confidently respond to God's calling, "Here am I, send me!" (Isaiah 6:1-8)
I don't believe in a puny god, but a great big God "who is able to do immeasurably more than all we ask or imagine, according to his power that is at work within us." (Ephesians 3:20) It is this belief in a great big God that is the foundation of my calling and gives me the faith to believe and attempt great things!