The Jews that Jesus was talking to here thought they had eternal life in the bag because of their fervent & legalistic devotion to reading, studying, and searching the Old Testament Scriptures. They mistakenly thought that all their ritualistic reading of the sacred writings would somehow merit eternal life…but in the process they totally missed & even refused to recognize the Author of said Scriptures standing there in front of them. The Lord doesn’t ask us to believe the Bible, but rather to believe in the One whom the Bible reveals…and no amount of study or reading of the Word will ever grant you eternal life…for only faith in Jesus Christ can save you.