”By faith Sarah herself also received strength to conceive seed, and she bore a child when she was past the age, because she judged Him faithful who had promised.” (Hebrews 11:11; Gen. 18:10-15)
By faith Sarah trusted God for her to be able to give birth when she was past the age of childbearing.
Sarah’s faith was based on believing a promise God gave her of having a son (Gen. 18:10). Do you believe in the promises of God more than your natural circumstances?