in Shmuel I chapter 19 Posuk 20.
And Saul sent messengers to take David, and he saw the company of prophets prophesying and Samuel was standing as head over them; and a spirit from God was upon Saul's messengers, and they too prophesied. כוַיִּשְׁלַח שָׁאוּל מַלְאָכִים לָקַחַת אֶת דָּוִד וַיַּרְא אֶת לַהֲקַת הַנְּבִיאִים נִבְּאִים וּשְׁמוּאֵל עֹמֵד נִצָּב עֲלֵיהֶם וַתְּהִי עַל מַלְאֲכֵי שָׁאוּל רוּחַ אֱלֹהִים וַיִּתְנַבְּאוּ גַּם הֵמָּה:
What does this mean exactly? i'm a little bit confused, did they come to get him and as they got there they fell into a trance and started prophesying?