Christians condemned Islam's polygamy while ignoring biblical precedents [fact]
For Christians, marriage meant a union with one partner, dissoluble only by death—they thus pointed to Muhammad’s multiple wives as proof of his perversion. (Abraham’s multiple wives, however, were left out of the debate.) Islam permitted men to take four wives, allowed divorce, and even allowed divorced women to remarry. Christians viewed this with horror.
XREF: Typical example of selective comparison between religious traditions, where critics of one faith overlook similar features in their own.
Deepa Kumar, Islamophobia and the Politi…, loc. 67