Genesis 21:6-7

Genesis 21:6-7

[6] And Sarah  said,  God  hath made  me to laugh,  so that all that hear  will laugh  with me. [7] And she said,  Who would have said  unto Abraham,  that Sarah  should have given children  suck?  for I have born  him a son  in his old age. 

What is the context of Genesis 21:6-7?