The center of Jesus' teachings is the doctrine of the Kingdom of God, this Kingdom is often compared with Parables in the tales of Jesus. The parables are stories or contrived narrations that seek to express some quality or characteristic of the Kingdom.
Some interpretations maintain that the Kingdom of God is the Church, but there is no affirmation in the Gospels that corroborate this idea, the Kingdom of God is an ethical or philosophical doctrine, it is in essence the dominion, empire of the gifts of God.
God is perfection in the highest degree, the gifts are perfections: "Be perfect as the heavenly Father is perfect", Matthew 5:48. Some of these perfections are divine attributes, that is to say, non-transmissible perfections like eternity: "I am the alpha and the omega", Revelation 1:8. Some perfections, on the other hand, are "gifts", "presents", like mercy, the gift of advice, the perseverance.
In fact, the parables illustrate with things of the daily life about what happens in men when they live the spiritual gifts, that is, when they seek the correct and the best, the correct for the gift of counsel and the best for the mercy.
This domain of infused virtues or spiritual gifts has characteristics, the parables illustrate the different characteristics of the Kingdom, domain or empire: 1) The gifts are path, they are lived because they are progressive, the gifts are the precise and the exact, many parables make reference to progressivity, that is to say the development of the beings towards their own nature (that is, what they tend to, towards his development):
The parable of the sower: "A farmer went out to sow his seed. As he was scattering his seed, some fell along the path, and the birds came and ate it up. Some fell in rocky places, where it did not have much soil. It sprang out quickly, because the soil was shallow. But when the sun came up, the plants where scorched, and they withered because they had no root. Other seed fell among thorns, which grew up and choked the plants, so that they did not bear grain. Still other seed fell on good soil. It came up, grew and produced a crop.", Mark 4:3-8
2) The gifts refer to the self-knowledge, to the hidden wisdom that must be discovered in our interior, that is, to the new childhood: The parable of the hidden treasure:The kingdom of heaven is like treasure hidden in a field. When a man found it, he hid it again, and then in his joy went and sold all he had and bought that field.", Matthew 13:44.
3) The Kingdom of God refers to the search for truth and the infusion of Charity, that is, to hope:
The parable of the lost sheep:"If a man owns a hundred sheep, and one of them wanders away, will he not leave the ninety-nine on the hills and go to look for the one that wandered off? And if he finds it, truly I tell you, he is happier about that one sheep than about the ninety-nine that did not wander off. In the same way your Father in heaven is not willing that any of these little ones should perish." Matthew 18:12-14
The parables can only be understood in the light of the progressive thinking, that is, in the light of the development of the thought from the simplest to the most complex concepts, and this is the gift of knowledge. This is why the parables are the deepest and most mysterious thought of wisdom and can only be analyzed by the spirit, not by the soul.
Thence, Jesus affirms: "The secret of the kingdom of God has been given to you. But to those on the outside, everything is said in parables" Mark 4:11