When we follow the leading of the Holy Spirit. God can accomplish things through us, we never thought ourselves capable of. Holy Spirit gives us the confidence, the words and all we need to do what he calls us to.
Esther is a great example of this. She did what God asked of her and saved an entire people through a few dinners and a request.
God calls us to do and be more then we could of ever think possible. In my life God has provided over and over again in ways I never expected. In the last few years my husband I have faced the most financial instability we have ever faced since we got married. But God has provided over and over again from people and places we never expected. We know that God will continue to provide because he always does.
We all need to trust him. He will provide what we need to accomplish what he asked of us.