The things of God can not be understood by men unless they are revealed to them by God. As it can be seen, even those to whom Jesus told things His words were hidden from their eyes. Today it is the same, men think they know about God's will for them simple by interpretations of the scriptures and can not see thyat they mean exactly what they say in context.
Deut 29:29
29 "The secret things belong to the Lord our God, but those things which are revealed belong to us and to our children forever, that we may do all the words of this law.
NKJV
Rom 16:25-27
25 Now to Him who is able to establish you according to my gospel and the preaching of Jesus Christ, according to the revelation of the mystery kept secret since the world began
26 but now made manifest, and by the prophetic Scriptures made known to all nations, according to the commandment of the everlasting God, for obedience to the faith —
27 to God, alone wise, be glory through Jesus Christ forever. Amen.
NKJV
Matt 13:34-35
34 All these things Jesus spoke to the multitude in parables; and without a parable He did not speak to them,
35 that it might be fulfilled which was spoken by the prophet, saying:
"I will open My mouth in parables;
I will utter things kept secret from the foundation of the world."
NKJV
Eph 3:8-12
8 To me, who am less than the least of all the saints, this grace was given, that I should preach among the Gentiles the unsearchable riches of Christ,
9 and to make all see what is the fellowship of the mystery, which from the beginning of the ages has been hidden in God who created all things through Jesus Christ;
10 to the intent that now the manifold wisdom of God might be made known by the church to the principalities and powers in the heavenly places,
11 according to the eternal purpose which He accomplished in Christ Jesus our Lord,
12 in whom we have boldness and access with confidence through faith in Him.
NKJV
Matt 13:11-15
11 He answered and said to them, "Because it has been given to you to know the mysteries of the kingdom of heaven, but to them it has not been given.
12 For whoever has, to him more will be given, and he will have abundance; but whoever does not have, even what he has will be taken away from him.
13 Therefore I speak to them in parables, because seeing they do not see, and hearing they do not hear, nor do they understand.
14 And in them the prophecy of Isaiah is fulfilled, which says:
'Hearing you will hear and shall not understand,
And seeing you will see and not perceive;
15 For the hearts of this people have grown dull.
Their ears are hard of hearing,
And their eyes they have closed,
Lest they should see with their eyes and hear with their ears,
Lest they should understand with their hearts and turn,
So that I should heal them.'
NKJV
Luke 8:10
10 And He said, "To you it has been given to know the mysteries of the kingdom of God, but to the rest it is given in parables, that
'Seeing they may not see,
And hearing they may not understand.'
NKJV
Luke 9:43-45
But while everyone marveled at all the things which Jesus did, He said to His disciples,
44 "Let these words sink down into your ears, for the Son of Man is about to be betrayed into the hands of men."
45 But they did not understand this saying, and it was hidden from them so that they did not perceive it; and they were afraid to ask Him about this saying.
NKJV
John 8:42-43
42 Jesus said to them, "If God were your Father, you would love Me, for I proceeded forth and came from God; nor have I come of Myself, but He sent Me.
43 Why do you not understand My speech? Because you are not able to listen to My word.
NKJV
John 10:6
6 Jesus used this illustration, but they did not understand the things which He spoke to them.
NKJV
Deut 29:29
29 "The secret things belong to the Lord our God, but those things which are revealed belong to us and to our children forever, that we may do all the words of this law.
NKJV
Rom 16:25-27
25 Now to Him who is able to establish you according to my gospel and the preaching of Jesus Christ, according to the revelation of the mystery kept secret since the world began
26 but now made manifest, and by the prophetic Scriptures made known to all nations, according to the commandment of the everlasting God, for obedience to the faith —
27 to God, alone wise, be glory through Jesus Christ forever. Amen.
NKJV
Matt 13:34-35
34 All these things Jesus spoke to the multitude in parables; and without a parable He did not speak to them,
35 that it might be fulfilled which was spoken by the prophet, saying:
"I will open My mouth in parables;
I will utter things kept secret from the foundation of the world."
NKJV
Eph 3:8-12
8 To me, who am less than the least of all the saints, this grace was given, that I should preach among the Gentiles the unsearchable riches of Christ,
9 and to make all see what is the fellowship of the mystery, which from the beginning of the ages has been hidden in God who created all things through Jesus Christ;
10 to the intent that now the manifold wisdom of God might be made known by the church to the principalities and powers in the heavenly places,
11 according to the eternal purpose which He accomplished in Christ Jesus our Lord,
12 in whom we have boldness and access with confidence through faith in Him.
NKJV
Matt 13:11-15
11 He answered and said to them, "Because it has been given to you to know the mysteries of the kingdom of heaven, but to them it has not been given.
12 For whoever has, to him more will be given, and he will have abundance; but whoever does not have, even what he has will be taken away from him.
13 Therefore I speak to them in parables, because seeing they do not see, and hearing they do not hear, nor do they understand.
14 And in them the prophecy of Isaiah is fulfilled, which says:
'Hearing you will hear and shall not understand,
And seeing you will see and not perceive;
15 For the hearts of this people have grown dull.
Their ears are hard of hearing,
And their eyes they have closed,
Lest they should see with their eyes and hear with their ears,
Lest they should understand with their hearts and turn,
So that I should heal them.'
NKJV
Luke 8:10
10 And He said, "To you it has been given to know the mysteries of the kingdom of God, but to the rest it is given in parables, that
'Seeing they may not see,
And hearing they may not understand.'
NKJV
Luke 9:43-45
But while everyone marveled at all the things which Jesus did, He said to His disciples,
44 "Let these words sink down into your ears, for the Son of Man is about to be betrayed into the hands of men."
45 But they did not understand this saying, and it was hidden from them so that they did not perceive it; and they were afraid to ask Him about this saying.
NKJV
John 8:42-43
42 Jesus said to them, "If God were your Father, you would love Me, for I proceeded forth and came from God; nor have I come of Myself, but He sent Me.
43 Why do you not understand My speech? Because you are not able to listen to My word.
NKJV
John 10:6
6 Jesus used this illustration, but they did not understand the things which He spoke to them.
NKJV