A Good Foundation | cfcindia, Bangalore
We read later that Abram called himself by the new name that God gave him - Abraham (which meant "the father of a multitude"). Sarah, his wife was still childless. But that didn't make any difference to Abraham. He still called himself the father of a multitude, because he believed what God had said (Genesis 17:5).
That is the confession of faith - confessing what God has said, even when we haven't seen the fulfilment of the promise.
That's all that God asks us to do - to say the same thing that He has said in His Word. When we confess God's promises, we express our faith in God; and then God is able to work on our behalf.
- Zac Poonen, A Good Foundation
Link - https://www.cfcindia.com/books/a-good-foundation