It is Hidden
The only way to understand the Bible is to be free, diligent, and disciplined. There must not be fences and doctrines against the scriptures or it will never make sense. Monks are diligent but not free. Christians are not free or diligent, most are caught up in things of the world and misled by false teaching. The Bible is written to work with the human mind like a digital movie with a television. The parts of the story are all there but many things can interfere and stop the show. The Bible can only be understood when the pieces of information are learned well enough to be put together in the mind, then the picture takes shape. This way it is hidden from the enemy because they do not like to retain God in their knowledge and therefore cannot hold the pieces long enough to put them all together. Similarly, if we become prejudiced against some of the pieces, the picture will never take shape.
This is clearly a plan of God, Numbers 12:6, "And he said, Hear now my words: If there be a prophet among you, I the LORD will make myself known unto him in a vision, and will speak unto him in a dream. 7 My servant Moses is not so, who is faithful in all mine house. 8 With him will I speak mouth to mouth, even apparently, and not in dark speeches (riddles); and the similitude of the LORD shall he behold: wherefore then were ye not afraid to speak against my servant Moses?" Clearly God has arranged the information in riddles, parables, and events that must be unraveled because as He said, Mark 13:10, "And the disciples came, and said unto him, Why speakest thou unto them in parables? 11 He answered and said unto them, Because it is given unto you to know the mysteries of the kingdom of heaven, but to them it is not given."
We in America are taught to hate Jewish things. Yet it is Jewish things we must learn in order to understand and be a part of the kingdom. Consider that the entire Bible is a Jewish writing. All the commandments of the Lord are Jewish commandments. What we really hate is what the Lord hates as well as He described in Rev 2:9,"I know thy works, and tribulation, and poverty, (but thou art rich) and I know the blasphemy of them which say they are Jews, and are not, but are the synagogue of Satan."