Flawed but Faithful - Augustine

Now faith is the assurance of things hoped for, the conviction of things not seen. ² For by it the people of old received their commendation. ³ By faith we understand that the universe was created by the word of God, so that what is seen was not made out of things that are visible.

⁴ By faith Abel offered to God a more acceptable sacrifice than Cain, through which he was commended as righteous, God commending him by accepting his gifts. And through his faith, though he died, he still speaks.