30 Jesus asked him, "What is your name?" He said, "Legion," for many demons had entered into him.
*Minor differences ignored. Grouped by changes, with first version listed as example.
And Jesus asked him, saying, what is thy name?.... This question was put, not out of ignorance in Christ, but for the sake of those that were with him; and partly, that the miserable condition of this man might be the more known; and partly, that his own power might be the more manifest in the dispossession:
and he said, legion, because many devils were entered into him; See Gill on Mark 5:9.
*More commentary available at chapter level.