[kosta50]

Answer: Yes, it's called the Holy Bible

Wrong. The "Holy Bible" of the Catholic Church had to wait another 150 or years to be completed by the Church, and that of the Protesters another 1,300 years.

Individual churches in the 2nd century AD had various writings that make up the current Bibles, but they also had many writings that don't. Justin Martyr himself only references the Gospels.

[small voice in the wilderness]

Yes, and the Bereans "were more noble than those in Thessalonica, in that they received the word with all readiness of mind, and searched the scriptures daily, whether those things were so." Acts 17:11.

Perhaps they searched other writings themselves and compared them to scripture and found out those things were not so.