Which version of the Old Testament did Jesus quote from?
The Old Testament version Jesus quoted from was the Septuagint, the Greek translation of the Hebrew Old Testament made by seventy Jewish scholars before Christ. When He did not quote the Hebrew, He quoted the Septuagint Greek. That is the version He consistently referenced.
Les explains that the Septuagint was the Old Testament Hebrew translated into Greek by seventy Jewish scholars years before Christ. He emphasizes it because that was the Greek Jesus always referred to. Whenever Jesus quoted the Old Testament, if He did not quote it in the Hebrew, He would quote from the Septuagint Greek. Les also notes that this is where many Greek scholars put the Greek language together for our benefit.