The story of Sarah is found in the book of Genesis.

Influential Women Of The Bible: Sarah
The story of Sarah is found in the book of Genesis.
Sarah is the wife of Abraham whose name was originally Sarai (Genesis 11:29). Her name was changed to Sarah when she was promised that she would bear a son and become the mother of nations and kings (Genesis 17:15-16).

Sarah went with her husband Abraham in his journey from Ur of the Chaldees to Haran and eventually into the land of Canaan. She could not have children during most of her marriage. When God promised Abraham that his children would become a great nation and that the land of Canaan would be given to his descendants, Sarah was still barren. After ten years had passed, Abraham and Sarah still had no children. Sarah decided to give her Egyptian slave, Hagar, to Abraham to have a child. Hagar conceived and bore a son, Ishmael. God promised that a nation would come from Ishmael but that he was not the child God had promised Abraham. Sarah herself was to be the mother of this child. Finally when she was ninety years old, she gave birth to her son Isaac, twenty-five years after the original promise of a child to Abraham (Genesis 17:17).
Every woman drawing closer to God will face the challenge of trusting him. Although at the beginning Sarah struggled with her faith, but at the end she trusted in God’s promise. Job 8:7 says, “Though thy beginning (is) small, yet thy latter end should greatly increase.” Many times God’s word doesn’t take effect immediately but as we hear it over and over our faith begins to increase. The same is true of Sarah. The writer to the Hebrews in our text expressed the fact that it was “through faith” that Sarah “received strength to conceive seed.” This was the beginning. Then she needed faith to “deliver the child” in her old age. This was the end. Her faith in God’s promise caused her body to do what it wasn’t strong enough to do before. Her body was now restored to perform its natural functions. Her dead womb was supernaturally revived. She trusted God to the end. Sarah trusted God alongside her husband Abraham to fulfill His promise.
Romans 8:35 says: “Who shall separate us from the love of Christ? shall tribulation, or distress, or persecution, or famine, or nakedness, or peril, or sword?” We can let nothing separate us from the promises of God! We can’t allow being barren; deadness; not feeling productive, to separate us from what God has promised. My sisters, let the example of Sara’s faith encourage you also to trust God to the end. You may not see it in the beginning but keep declaring God’s promises. You will soon discover God to be faithful to His word in the end. Hebrews 3:14 says, “For we are made partakers of Christ, if we hold the beginning of our confidence steadfast unto the end.” I have confidence that God is going to see me through, no matter what the case may be, I know He is going to fix it for me! Have faith like Sarah, to know that God will see you through to the end!!!