מלכים ב ב:כד פירוש: רש״י

And saw them. He saw that neither in them nor in their descendants would there be any sap of good deed.²³See Shemos 2:12 and Rashi there.²⁴Some say that Elisha saw that their hair was cut in the style of the heathens. He believed that they were degenerate and depraved and foresaw that they would never return to the ways of the Torah. See Maseches Sotah 46b.