We often say, “If I could understand something, then I would believe it.” Yet God says that when you believe something, then you will understand it. Hebrews 11:3 says it is, “By faith we understand that the worlds were created by the word of God…” So faith is: God said this. That settles it.
As we learn to not trust in our own ability, we then constantly live on the reality of Christ living His life in us. That is, the just shall live by faith, as we look unto Jesus.