וְצָלְחָ֤ה עָלֶ֙יךָ֙ ר֣וּחַ יְהוָ֔ה וְהִתְנַבִּ֖יתָ עִמָּ֑ם וְנֶהְפַּכְתָּ֖ לְאִ֥ישׁ אַחֵֽר׃
And the spirit of the LORD will come mightily upon thee, and thou shalt prophesy with them, and shalt be turned into another man.
Read kabbalistic (mystical) interpretation of I Samuel 10:6: and classical mystical sources.