For an example, if you look at Greek septuagint of verse Isaiah 42:1. You will notice that the verse was corrupted with the name Jacob in it, yet early Greek Christians still adhere to a corrupt version of Septuagint to be compiled together with many other Greek books written by many unknown Hellenistic authors to form corpus of Bible.
And only in the 3rd/4th century they realized that they need to filter out many Greek books and in the end declared 26 Greeks books as cannon.
