Point of contention, there will never be peace until one of the religions stops killing apostates, stops treating other religions as inferior, stops conversion by the sword, stops using religion as an excuse for slavery, female genital mutilation, taxation, rape, etc etc.....
I am sure two of the two major abrhamatic religions will get along just fine more or less. The “third” one that is a “Compelte Lives system” will continue to be the bur in the saddle....
One of these religions has done an extensive job of setting itself apart, rewriting history and distorting the meaning and intent of the rules set down long before they ever came upon the scene. For one thing, they no longer practice anything like the Decalogue, choosing instead to impose the judgment of fallible men over the immutable wisdom painfully acquired over the ages. And there is nothing at all like the “good Samaritan” rule or the Golden Rule anywhere in their extensive re-write of religious texts, but there is a great deal of “eye for an eye, tooth for a tooth” in their adopted philosophy.
Ideology disguised as a religion is really a cult, and should be treated as such. Government by a self-appointed theocracy has never been very satisfactory in the history of mankind.
Probably works just fine in an anthill, though. Or in something like the Collective among the Borg, which assimilates its opponents.