The verses just prior to this reading set the scene where three strangers were approaching the tent of Abraham and Sarah. Reading from Genesis 18:9-15.
They said to him, “Where is your wife Sarah?” And he said, “There, in the tent.” Then one said, “I will surely return to you in due season, and your wife Sarah shall have a son.” And Sarah was listening at the tent entrance behind him. Now Abraham and Sarah were old, advanced in age; it had ceased to be with Sarah after the manner of women. So Sarah laughed to herself, saying, “After I have grown old, and my husband is old, shall I have pleasure?” The Lord said to Abraham, “Why did Sarah laugh, and say, ‘Shall I indeed bear a child, now that I am old?’ Is anything too wonderful for the Lord? At the set time I will return to you, in due season, and Sarah shall have a son.” But Sarah denied, saying, “I did not laugh”; for she was afraid. He said, “Oh yes, you did laugh.”
A period of time has passed when we pick up the story again in Genesis 21: 1-7.
The Lord dealt with Sarah as he had said, and the Lord did for Sarah as he had promised. Sarah conceived and bore Abraham a son in his old age, at the time of which God had spoken to him. Abraham gave the name Isaac to his son whom Sarah bore him. And Abraham circumcised his son Isaac when he was eight days old, as God had commanded him. Abraham was a hundred years old when his son Isaac was born to him. Now Sarah said, “God has brought laughter for me; everyone who hears will laugh with me.” And she said, “Who would ever have said to Abraham that Sarah would nurse children? Yet I have borne him a son in his old age.”
In the third reading, Jesus is talking with his disciples in the evening of the last supper. Judas had just left the group at the point where the reading began so Jesus was talking to the eleven close friends. The Greek term which is translated as “Little children” is an expression of endearment and could be understood as “my dear friends”. Reading from John 13:31-35.
When he had gone out, Jesus said, “Now the Son of Man has been glorified, and God has been glorified in him. If God has been glorified in him, God will also glorify him in himself and will glorify him at once. Little children, I am with you only a little longer. You will look for me; and as I said to the Jews so now I say to you, ‘Where I am going, you cannot come.’ I give you a new commandment, that you love one another. Just as I have loved you, you also should love one another. By this everyone will know that you are my disciples, if you have love for one another.”