A couple in Eretz Yisrael went to many fertility doctors, but after twelve years of hoping, the doctors told them they would never bear children. That's when they decided to adopt a child.
When their child's class learned how to read, the cheder celebrated with a siddur party, and the adopted parents came to rejoice with their child, whom they loved like their own. Later on that day the parents noticed that their child was extremely happy, in a way they’ve never seen before.
They asked him about that, and he replied, "I always wanted a brother, and now that I will be davening with a siddur, I will pray that you have another child, so I can have a brother."
The father didn’t want to break the child's heart, so he said, "Very good, begin davening."
Nine months later, they had a child. The tefillah and temimus of the child broke all barriers. Such is the power of tefillah.
Special thanks to Stories to Inspire for the story