Sarah bore a child when she was past child-bearing age.
The foundation of her faith was that she judged God to be faithful in what He promised
Through faith also Sara herself received strength to conceive seed, and was delivered of a child when she was past age, because she judged Him faithful who had promised.
Jesus is the perfect leader and perfect High Priest. According to Hebrews 5:5-8, He learned obedience by the things He suffered.
Moses made choices that appeared ridiculous to the Egyptians. Read Hebrews 11:23-29 noting the connection between faith and willing sacrifice.