Noun
parting of the ways (plural partings of the ways)
(idiomatic) a separation of two things or people because of a disagreement, a point of divergence, especially an important one
We came to a parting of the ways because of our different ideas about what should be done to move the company forward.
Jinnah announced a "parting of the ways" after reading the report, and relations between the Congress and the League began to sour. Source: Internet
John Riches states that: The translation of the Bible into Latin marks the beginning of a parting of the ways between Western Latin-speaking Christianity and Eastern Christianity, which spoke Greek, Syriac, Coptic, Ethiopic, and other languages. Source: Internet