“And I shall pass through Egypt on this night, and I shall strike every firstborn … I, Hashem.”
~ Numbers 12:12
Unlike the other plagues, where Hashem commanded Moses to bring on the disaster, here Hashem says he’ll do it himself.
Although a King may have many servants to do his bidding, some tasks can only be done personally. Not because other people are incapable, rather it’s just not fitting.
We live in times of comfort and automation where almost anything can be done by simply clicking a button. Some things, however, will always need your direct and personal touch.