Why are lack of understanding and lack of sympathy common?

Update: I would like to add some information around the text highlighted in yellow below. I believe that the first priority must go to the words of Jesus, the keeping of which is necessary for salvation, according to Jesus (Luke 6:46-49, John 14:15-24, 15:10-14, Revelation 2:5 etc.). Also, the canon of the Bible is up for scientific and faithful investigation. I do not accept any special authority of what are called the Eastern or Oriental Orthodox churches.

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It is an every day occurrence that someone feels with frustration that the people they are dealing with are without understanding, uncomprehending, lacking intelligence (and sympathy, wisdom, etc.). 

Unfortunately, because of incompetent preaching, people have not heard that the widespread problem of uncomprehending and unsympathetic behaviours by people is explicitly promised in the New Testament. 

Lack of intelligence (understanding, comprehension, etc.), and lack of sympathy are two of the punishments that falls upon people who "do not deem God worthy to have in knowledge". Romans 1:16-32 explains that God has the power to make a person righteous (when they accept Jesus as Lord), and the power to hand a rebellious person over to sin so that God's wrath becomes obvious.

How can one "deem God worthy to have in knowledge"? My answer is that a person needs to have a humble, listening attitude toward God. Such a person considers as a first priority,

(1) The texts that are said to have been inspired by God's Holy Spirit. (Here I believe with many Orthodox churches that there are 77 books of the Holy Bible.)

(2) The claim that God is omnipotent: nothing happens without God's permission.

(3) The claim that God is an impartial, entirely just judge, who rewards and punishes based on a person's deeds.