Can a Chrisitan lose his/her salvation?

[mordant]

Contrast this with Catholicism, Eastern Orthodoxy, Coptic Christianity and the Protestant Armenian school of thought that says that a person can sin to the point that he/she forfeits eternal life.

It also contrasts with the doctrine of Universal Reconciliation (UR), or apokatastasis which states that all men will eventually be saved. Unlike "once saved always saved" this theological notion has roots back much further but has been a minority position and more of an expressed hope than a guarantee until the rise if Christian Universalism in the 19th century.

It also contrasts with the annihilationism (e.g., modern Anglicans, Christadelphians, Seventh Day Adventists) who state that the unsaved simply cease to exist at death, that the unregenerate are simply destroyed, not sent to eternal perdition.

---

The original Bible was written in Latin.  All of the Greek language Bibles are translations.  And your Greek text is in Modern Greek.

The original manuscripts of the OT are in Hebrew, the NT in Greek. The Latin Vulgate was an early translation from those originals. You have it exactly backwards. Where did you get such a notion?