Yochanan I 4:1-6

1 Chaverim, do not believe every ruach. [YIRMEYAH 29:8] But test the ruchot (spirits), if they be of Hashem, because many nevi’ei sheker have gone out into the Olam Hazeh.

2 By this we have da’as of the Ruach Hakodesh of Hashem: every ruach which makes hoda’ah (confession) of Yehoshua, Rebbe, Melech HaMoshiach as having come in the basar is of Hashem,

3 And every ruach which does not make hoda’ah of Yehoshua is not of Hashem. And this is the ruach of the Anti-Moshiach, which you have heard that it is coming; and now it already is in the Olam Hazeh.

4 Yeladim, you are of Hashem, and you have overcome them, because greater is the One in you than the one in the Olam Hazeh. [MELACHIM BAIS 6:16]

5 They are of the Olam Hazeh; therefore, of the Olam Hazeh they speak, and the Olam Hazeh pays heed to them.

6 We are of Hashem; the one having da’as of Hashem pays heed to us; he who is not of Hashem does not pay heed to us. From this we have da’as of the Ruach [Hakodesh] of Emes and the ruach tatu’im (spirit of delusion, error).