The Holy bible which is called the authorized version and the King James. It is not just a good book but the word of God.
Have you found the right door in life? John 10:7-9 Then said Jesus unto them again, Verily, verily, I say unto you, I am the door of the sheep. 8All that ever came before me are thieves and robbers: but the sheep did not hear them. 9I am the door: by me if any man enter in, he shall be saved, and shall go in and out, and find pasture.