The link is a review of Bart Ehrman’s most recent book, How Jesus Became God. The reviewer, a New Testament scholar like Ehrman, correctly summarizes Ehrman’s case. That is Jesus, a relatively unimportant itinerate Jewish preacher, became a god after his death. It happened when two or three of his fans reported they saw him, possibly in visions or dreams.
The reviewer makes the accusation several times the Ehrman’s approach to this history of Jesus is polemic. That is, it is not scholarly in the traditional sense but argumentative and challenging.
No one knows for certain the events around Jesus. Take Erhman’s claim that Roman Jews knew of other gods. That is reported in the Ten Commandments. But, the reviewer’s “fact” is Roman Jews were not allowed to worship but one god. He concludes Roman Jews could not consider the existence of any other god.
Then there is Ehrman’s historical evidence it is very unlikely the body of Jesus was turned over to his followers. This was based on non Biblical documents. The reviewer brings up Jewish law to argue against Ehrman. That, even though Jews were not in charge, Romans were.
To me, the reviewer is every bit as polemic as Ehrman–a case of the pot calling the kettle black. In fact, everyone who studies the Bible or talks about it, believer or not, is polemic.
There is no way to talk about tiny bits of information dripping with emotion and political overtones without being at least a bit polemic.