Why didn't their Rabbis and priests prohibit them from speaking sinful words and eating forbidden things? What an evil they have been producing!
The Rabbis and priests mentioned in the verse were from the Jews and Christians during the Messenger's time. Today, this verse applies to the so-called hypocritical Ulamas, Imams, and leaders among the Arabic Quran reading Fujjar who are bearing the final form of the Lord’s Book. The hypocritical leaders among different Fujjar groups are eating and encouraging their followers to eat forbidden things. Thus they have made permissible the house of the worthless Hell to their followers as explained in verse 4: 19. They are the transgressors who are even hiding the names of the Adhikr. They are following Jews and Christians inch by inch and cubit by cubit as explained in verse 2: 44. “What an evil they have been producing” told in verse means that they are not only destroying themselves, but they are also destroying their offspring by doing and encouraging all these evils. After the second coming of Jesus, these hypocrites and their blind followers will be killed by the other people belonging to Messenger's community as explained in verses 4: 91 and 9: 5. The Fujjar will argue, curse, and blame each other in Hell as explained in verses 2: 165-167.
The believer who changes his ledger from Sijjeen of Hell (83: 7) into Illiyeen of Paradise (83: 18) with Adhikr follows a lifestyle explained in verses 7: 205-206. See explanation 2: 204; 3: 78; 4: 85 and 150-151.