Mark 5:42 (BSB)

Immediately the girl got up and began to walk around (she was twelve years old). And at once they were utterly astounded.

From Mark 5. Also in the ESV.

Commentary on Mark 5:42

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Mark 5:35-43: Diseases and deaths came into the world by the sin and disobedience of the first Adam; but by the grace of the second Adam both are conquered. Christ, having healed an incurable disease, here goes on to triumph over death, as in the beginning of the chapter he had triumphed over an outrageous devil. I.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Mark 5:42: And straightway the damsel arose, and walked,.... As soon as ever the above words were pronounced by Christ, such divine power went along with them, that the child returned to life; and raised herself up from the bed, got off of it, and walked about the room in perfect health and strength: for she was of the age of twelve years; and so, when alive...