Mat 13:11 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.
Mat 13:12 For whosoever hath, to him shall be given, and he shall have more abundance: but whosoever hath not, from him shall be taken away even that he hath.
Mat 13:13 Therefore speak I to them in parables: because they seeing see not; and hearing they hear not, neither do they understand.
In short Jesus is saying “Believers are given the ability to understand scripture but not to the unbelivers. We, as Believers, can understand if we strive to learn truth. It is for sure God depends upon us to do so!
2Ti 2:15 Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.
2Ti 2:16 But shun profane and vain babblings: for they will increase unto more ungodliness.
2Ti 2:17 And their word will eat as doth a canker: of whom is Hymenaeus and Philetus; (THESE TWO WERE FALSE PROPHETS)
2Ti 2:18 Who concerning the truth have erred, saying that the resurrection is past already; and overthrow the faith of some.
2Ti 2:19 Nevertheless the foundation of God standeth sure, having this seal, The Lord knoweth them that are his. And, Let every one that nameth the name of Christ depart from iniquity.
2Ti 2:20 But in a great house there are not only vessels of gold and of silver, but also of wood and of earth; and some to honour, and some to dishonour.
2Ti 2:21 If a man therefore purge himself from these, he shall be a vessel unto honour, sanctified, and meet for the master's use, and prepared unto every good work.