“It was by faith that even Sarah was able to have a child, though she was barren and was too old. She believed that God would keep his promise. And so, a whole nation came from this one man who was as good as dead—a nation with so many people that, like the stars in the sky and the sand on the seashore, there is no way to count them.” Hebrews 11:11-12
It would be easy to become discouraged and hopeless in a situation like this. Abraham and Sarah waited for years hoping to have a child only to grow old without an heir. The possibility of reproduction gone with each passing year. The history of trying to conceive over and over without success would be more than enough to dash any hope for the future.
Then the Lord appeared to Abraham telling him at the same time next year Sarah would have a son. Sarah laughed as she overheard the conversation but the Lord replied to her, “Is anything too hard for the LORD? I will return to you at the appointed time next year and Sarah will have a son.” Confirming the Word, he originally gave Abraham that through him he would be the father of many nations.
Faced with a decision to believe God for the impossible, both Abraham and Sarah took the steps of faith required to conceive. Because of faith Sarah received the physical power to get pregnant although she was long past the ability to do so. The key lies in the fact that she considered God faithful who had promised a son. She chose not to consider the circumstances surrounding the situation only the guarantor of the promise.
When circumstances look impossible, that is the time that we need faith in God. That is the time that God will act. God loves to work in our impossible circumstances. He wants to show us His love for us.