When G‑d wanted to tell Abraham to bring his son Isaac as an offering, G‑d delivered the command Himself. But when He wanted to tell Abraham to let his son live, He sent an angel to deliver the message.
Our father Jacob was victorious over many a formidable adversary in his lifetime. However, there was one source of opposition that he could not overcome.
Even after being reunited with his father, Joseph avoided spending very much time with him. Why? Because of the one question that Joseph feared his father would ask him.