This noun appears in Ephesians 1:19, where Paul prays that believers might know 'the surpassing greatness of his power toward us who believe.' The word denotes magnitude or size, whether physical dimension or metaphorical greatness. Here it describes the incomprehensible magnitude of God's power, the same power that raised Christ from the dead and seated him at God's right hand. Paul wants believers to grasp not just that God has power but the exceeding greatness of that power actively working for those who trust him — power that transforms, sustains, and guarantees final glorification.