How do we know our sufficiency is in God?

In Exodus 3:11-12, Moses expresses doubt about his ability to confront Pharaoh, to which God replies, 'Certainly I will be with thee.' This promise reassures us that our ability to serve and save does not lie within ourselves but in God's sufficiency. In 2 Corinthians 3:5, Paul emphasizes that our sufficiency comes from God, who equips us for every good work. This demonstrates that our reliance on God is fundamental, as He empowers us in our weakness and leads us to accomplish His will.