'Royal' in the Bible

Meanwhile, in Egypt the Midianites sold Joseph [as a slave] to Potiphar, an officer of Pharaoh and the captain of the [royal] guard.

Now Joseph had been taken down to Egypt; and Potiphar, an Egyptian officer of Pharaoh, the captain of the [royal] guard, bought him from the Ishmaelites, who had taken him down there.

“Asher’s food [supply] shall be rich and bountiful,And he shall yield and deliver royal delights.