Do not add to His words, Lest He rebuke you, and you be found a liar.
Proverbs 30:6, NKJV
A friend recently asked if Christians ought to read non-canonical religious literature. Two varieties exist, mostly dating from about 500 BC to the time of Christ. While the apocryphal books were accepted by Catholics at the Council of Trent, they are rejected by Protestants. On the other hand, pseudepigraphical books, such as the Book of Enoch quoted in Jude 14-15, have never been canonized by any religious body.
For various reasons, Protestants reject these books as false and unreliable. Reading them is not forbidden, but it may be pointless. Why peruse the National Inquirer when you can study the Wall Street Journal? False religious literature will not equip your mind, feed your soul, or stand the test of time. On the other hand, the Word of God is a completely trustworthy lamp for our feet and light for our path that will abide for all eternity.