You serve nothing besides Him except some names you and your forefathers have named, for which Allah has sent down no authority; indeed the Judgment is for none except Allah, He has commanded you to serve none except Him, that is the upright way of life, but most among the mankind are not having real Knowledge.
There is no knowledge without Adhikr. 'Knowledge' is one among the 40 names of Adhikr mentioned in verses such as 2: 32; 3: 7, 9 and 11: 14. The Arabic Quran reading Fujjar's concept of the Lord is evil. They are strayed from the Straightpath. These soulless and heedless men are uttering 'Allah' with tongue, but by rejecting Adhikr, these Mujirims are serving Satan and are following his footsteps as explained in verses 2: 168-169. Verses 28: 57; 34: 28, 36 and 40: 57 are ending as: "But most of mankind are not having the real Knowledge". See explanation 4: 69-70; 9: 30-31 and 10: 17-18.