Surely you can find the hardest in enmity to the believers among the mankind are the Jews and those who associate others in the dominion of Lord Allah, and you can find affectionate towards those who believed, among those who say: “Indeed, We are the helpers”; that is because among them there are heedful devotees and the monks, and they were not arrogant.
During the revelation of this verse, the Jews and the Meccan pagans who associate others in the dominion of the Lord had more enmity towards the Messenger and believers. The Christians were saying that indeed they are the helpers of the Lord as explained in verse 3: 52. And some of them were affectionate towards the Messenger and believers.
Today the Arabic Quran reading Fujjar are reading these verses and not the Jews, Christians, or other people. After thirty years of Messenger’s departure, his people became three groups as explained in verse 3: 7. Among them, the Fujjar are the true disbelievers and Mushriks, and they are included in the party of Satan as explained in verses 4: 150-151. So these transgressors are having severe enmity against the believer who belongs to Lord’s party. The odd believer does Jihad with Adhikr against the Fujjar as explained in verse 9: 73. He also propagates Adhikr to the entire world irrespective of nation or religion aiming for the harmony of mankind and the statuesque of the universe. The believer is merciful towards the believers, neutral towards the other people belonging to Messenger's community, and rude and harsh towards the Fujjar and Kuffar as explained in verses 9: 67-68. Shortly after the proclamation of Mahdi, the believers from mankind all over the world will be separated from the Fujjar and will be admitted to Hejaz as explained in verse 9: 28. The Fujjar will be expelled and banished from Hejaz that day. Then after the departure of the last forerunner believer from this world, the emergence of the Antichrist occurs as explained in verse 6: 158. The Fujjar who accept Antichrist as a prophet and even as their lord will be killed by the other people after the second coming of Jesus as explained in verses 4: 91 and 5: 33. See explanation 2: 62, 174-176, and 3: 199-200.