The day Moses and Aaron made their appearance before Pharaoh happened to be the anniversary of his birth, and he was surrounded by many kings, for he was the ruler of the whole world, and this was the occasion on which the kings of the earth came to do him homage. When the attendants announced Moses and Aaron, Pharaoh inquired whether the two old men had brought him crowns, and, receiving a negative reply, he ordered that they were not to be admitted to his presence, until he had seen and dismissed all the others desirous of paying him their respects.
Moses and Aaron Appeared at Pharaoh's Birthday Celebration
Legends of the Jews 4:240