The Bereans search the scriptures daily to see if the oral traditions/teachings of the apostles were true. Therefore you are incorrect about what the scriptures say of themselves.
And what Scriptures were they searching? The Revelation of John? The four Gospels? Of course not - they were searching the Jewish texts. They were seeing whether the oral teachings of the Apostles were consistent with the Old Testament. They found that the oral teachings were consistent, and thus believed. See my post above addressed to Iscool, and how Scripture, at the end of the Gospel of John, specifically indicates it does not contain the whole of Christ's teachings.