I have read a little bit of the Dead Sea Scrolls on wiki and did not continue reading the rest as I don't like consulting wiki for answers especially about religion.
Have the Dead Sea Scrolls, which were found in the 1900s, been included in the Holy Bible? For example: The Book of Isaiah (which was apparently contained in the scrolls) was written before the discovery of these Dead Sea Scrolls or has it been included into the Bible since it's discovery in the 1900s. Was the whole Book of Isaiah present at the time of the Lord Jesus Christ or was it added since these scrolls discovery? I know the scrolls’ origin was dated much before the 1900s, but I just wanted to know if the Scripture has added any of its words from these Dead Sea Scrolls.
The Dead Sea Scrolls discovered in the mid 1900's corroborated the evidence already revealed in the Holy Scripture. Nothing more was added to the Holy Bible and nothing was taken away. Our Lord Jesus Christ Himself quoted from the Holy Book of Isaiah, which included many prophesies about Christ that were fulfilled.