On the other side of the door, Wizards Ernie and Watson were still standing respectfully as they remained vigilant to their surroundings. As Merlin's slaves, they did not dare defy any of his orders.
Since Merlin requested them to stand guard, it must have been important. However, in contrast to Wizard Ernie's careful diligence, Wizard Watson's attitude appeared to be more slipshod.
From inside the house, Merlin was able to observe all the happenings outside. Within this period, he also developed a certain understanding of both Ernie and Watson.
Although Wizard Ernie was quite old, his personality was cautious and adaptable. Upon becoming Merlin's slave, he fully discarded all his pride as a Seventh-level Spell Caster.