The Junior Class talked about how Abraham and Sarah had to wait for God's timing for their son, Isaac, to be born. You can read about this in Genesis 18-21.
When Isaac was older, God tested Abraham by asking him to sacrifice Isaac to him. Abraham obeyed God's instructions, proving that he loved God more than anything else. Abraham didn't have to sacrifice Isaac in the end as God provided a ram for the sacrifice. You can read about this in Genesis 22:1-19
Thank you, Muriel, for leading these classes.