God visited Sarah exactly as he said he would; God did to Sarah what he promised:
Sarah became pregnant and gave Abraham a son in his old age, and at the very time God had set.
Abraham named him Isaac.
When his son was eight days old, Abraham circumcised him just as God had commanded.
Abraham was a hundred years old when his son Isaac was born.
Sarah said, God has blessed me with laughter and all who get the news will laugh with me!