Genesis 44:20

44:20 We said to my lord, ‘We have an aged father, and there is a young boy who was born when our father was old. The boy’s brother is dead. He is the only one of his mother’s sons left, and his father loves him.’

Zechariah 12:10

12:10 “I will pour out on the kingship of David and the population of Jerusalem a spirit of grace and supplication so that they will look to me, the one they have pierced. They will lament for him as one laments for an only son, and there will be a bitter cry for him like the bitter cry for a firstborn.