Charles Spurgeon Commentary 1 Samuel 10:6

"and the Spirit of Jehovah will come mightily upon thee, and thou shalt prophesy with them, and shalt be turned into another man." — 1 Samuel 10:6 (ASV)

And shall be turned into another man.

Note that Samuel did not say to Saul, "You shall be turned into a new man," for that is what he never was. He became, for awhile, another man, a different man from what he had been before, but he never became a gracious man.