Chrysostom speaking about the hope Abraham had (Rom 4.18) in God’s promise – “It was against man’s hope, in hope which is of God.”
Calvin speaks on a similar theme from Rom 4.20 saying
Let us also remember, that the condition of us all is the same with that of Abraham. All things around us are in opposition to the promises of God: He promises immortality; we are surrounded with mortality and corruption: He declares that he counts us just; we are covered with sins: He testifies that he is propitious and kind to us; outward judgments threaten his wrath. What then is to be done? We must with closed eyes pass by ourselves and all things connected with us, that nothing may hinder or prevent us from believing that God is true.
May we hope against hope as father Abraham.