Some have regarded the words of our Lord, the child is not dead, but sleepeth, as really meaning that she was only in a swoon. But although she was actually dead in the ordinary sense of that word, namely, that her spirit had left the body, yet Christ was pleased to speak of death as a sleep; because all live to him, and because all will rise at the last day.
Hence in the Holy Scriptures the dead are constantly described as sleeping, in order that the terror of death might be mitigated, and immoderate grief for the dead be assuaged under the name of sleep, which manifestly includes the hope of the resurrection.
Hence the expression with regard to a departed Christian, that "he sleeps in Jesus." Then, further, this child was not absolutely and irrecoverably dead, as the crowd supposed, as though she could not be recalled to life; since in fact our Lord, who is the Lord of life, was going at once to call her back by his almighty power from the realms of death into which she had entered.
So that she did not appear to him to be dead so much as to sleep for a little while. He says elsewhere, "Our friend Lazarus sleepeth; but I go that I may awake him out of sleep." Christ, by the use of such language as this, meant to show that it is as easy with him to raise the dead from death as sleepers from their slumbers.