However, in order for the level of how Hashem is “Soveiv Kol Almin-Transcendent” to be revealed, in a way that we can consciously understand and feel, we need to “remove the bad from our midst.” (Devarim 13:6)
This will happen in the Time to Come, when the prophecy will be fulfilled, “And I, Hashem, will remove the spirit of impurity from the earth.” (Zecharya 13:2)
This is not the case in the time after the destruction of the Beis Hamikdash, since even in the time of the first Beis Hamikdash there were false prophets, and in the time of the second Beis Hamikdash there was baseless hatred. This is the counterpart of the type of belief in Hashem that transcends the limits of logic.
This intense experience of how Hashem is “Soveiv Kol Almin” is not directly accessible during the time of Exile, due to the unholiness of the world, which blocks out our ability to perceive this high level. In fact, even in the time of the Beis Hamikdash, many people did not access this level, due to the corresponding unholiness that was prevalent then.
The idea is that just as on the Side of Holiness there is a belief in Hashem that transcends logic, so too, at that time there were some Jews who held false beliefs in idolatry that were not based on logic, and these false beliefs were the “unholy counterpart” to the true superrational belief in Hashem.