[kosta50]

Kosta the Greek Church never added [the agignoskomena] it used them all along

HD: Perhaps that was your mistake

These books were part of the Septuagint OT before Christ, HD. None of the Apostles ever said that the Septuagint was flawed. Instead, they used it extensively because they didn't write for the Hebrew-speaking audience (in fact, hardly anyone spoke Hebrew in those days), but for Greek-speaking Jews and Gentiles.

The Gospels were written in the latter half of the 1st century (70-100 AD), and were in Greek because there was no life left in the Church in Jerusalem (closed in 69 AD, +James executed as a 'Lawbreaker'), and because the Apostles found themselves preaching to Greek-speakers. That's the reason +Paul's Epistles are written in Greek vs. Hebrew.

So, the Septuagint was the rational OT Scripture (the only Scripture at the time for Greek speaking converts) to be used, and no one had a problem with its canon except the Christ-denying Pharisees.

[HarleyD]

These books were part of the Septuagint OT before Christ, HD. None of the Apostles ever said that the Septuagint was flawed. So, the Septuagint was the rational OT Scripture

Which version of the Septuagint? I would refer you to post 10684.