True Christianity is lost in time.
A beautiful truth from this ancient Greek father of the church.
This is true & biblically “perfect” in that for “no reason” shall a “true” Christian try to achieve any “greater good” by doing “evil”.
For example, to wage a crusade war (evil) against others in order to “preserve Christianity”. The Bible is clear that all man-killers (murderers) for whatever reason have no age-during life in them.
If you “think” that without the crusades, Christianity would have been wiped out, then you don’t know Lord Jesus Christ “truly” (Fact).
“Above all Christians are not allowed to correct by violence sinful wrongdoings.” ~ Clement of Alexandria