the Most High, says: “Thus do We explain the signs in detail, so that the way of the criminals may become clear.” 1 That is, it becomes clear to people, so they remain wary and on their guard against it. It has been said:

...
Learn evil—not for evil’s sake, but to guard against its snare;
... For whoever knows not evil will fall into it unaware.

Deviation concerning Allah’s Names, as stated above, takes several forms 2:

The first is to use them in naming idols and false gods, as when the polytheists derived al-Lāt from al-Ilāh, al-Uzzā from al-Azīz, and Manāt from al-Mannān, and called an idol a god. Commenting on the verse, “And leave those who deviate concerning His Names,” Ibn Jarīr said: “This refers to the polytheists. Their deviation concerning Allah’s Names consisted in altering them from their proper forms and using them to name their gods and idols, adding letters to them or omitting letters from them. Thus, they named one of them al-Lāt, deriving it from the divine name Allah, and another al-Uzzā, deriving it from Allah’s Name al-Azīz.” 3 He then related that Mujāhid said regarding the meaning of the verse: “They derived al-Uzzā from al-Azīz and al-Lāt from Allah.” End quote.

This is deviation in the truest sense, for they diverted His Names to their idols and false gods.

The second type is to name Allah with something unbefitting His majesty and perfection. Allah’s Most Beautiful Names are established solely through revelation; no one may go beyond the Quran and Sunnah concerning them. Therefore, whoever introduces among them something that is not one of them is deviating concerning Allah’s Names. Al-Amash said