We shouldn't be too quick to accept anything on heresay, but study. These are things we have to be very careful of. Even these modern-day translations have errors in them, wording them differently which changes the whole context. I am not for them. The Ethiopian Orthodox Tewahedo Church views these additional books as canonical scripture, while other Christian denominations may not.
Regarding the Person of Jesus Christ also there have been serious discussions in Ethiopia. While affirming the Trinity, the Ethiopian Orthodox Church is non-Chalcedonian, meaning they reject the Chalcedonian definition of Christ's nature as having two distinct natures (divine and human) united in one person. Instead, they adhere to the miaphysite view, which emphasizes the one unified nature of Christ.
The Ethiopian Orthodox Tewahedo Church (EOTC), which uses the Ethiopian Bible (a broader canon of scripture than typically found in Western Christianity), does not subscribe to the "once saved, always saved" (often called "eternal security" in some Protestant circles) doctrine. They also think salvation is conditional upon a person's sustained commitment and obedience to God. That's "works" based salvation.