How does one practically receive the "light of the knowledge" of the Glory of God in 2 Corinthians 4:6?

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1) How does one practically receive the “light of the knowledge” of the Glory of God in

2 Corinthians 4:6 For God, who commanded the light to shine out of
darkness, hath shined in our hearts, to give the light of the
knowledge of the glory of God in the face of Jesus Christ.( AKJV
)

in his/her heart?

This question is a continuation of “What are the differences and similarities in the meanings of “light” in 2 Corinthians 4:6 and “brightness” in Hebrews 1:3 ?

2) Is this the same as:

1. Acts 9:18 – And immediately there fell from his eyes as it had been scales: and he received sight forthwith, and arose, and was
   baptized.

2. Acts 26:18 – to open their eyes, and to turn them from darkness to light, and from the power of Satan unto God, that they
   may receive forgiveness of sins, and inheritance among them which are
   sanctified by faith that is in me.

3. Acts 16:14 – And a certain woman named Lydia, a seller of purple, of the city of Thyatira, which worshipped God, heard us:
   whose heart the Lord opened, that she attended unto the things which were spoken of Paul.

4. Ephesians 1:18 – the eyes of your understanding being enlightened; that ye may know what is the hope of his calling, and
   what the riches of the glory of his inheritance in the saints,

5. Luke 24:45 Then opened he their understanding, that they might understand the scriptures,

( AKJV )

?

3) Is this the same as the vail in

2 Corinthians 3:16 – Nevertheless when it shall turn to the Lord, the vail shall be taken away

being taken away?

4) Is the vail one’s dullness of heart mentioned in

1. Matthew 13:15 – for this people’s heart is waxed gross, and their ears are dull of hearing, and their eyes they have closed;
   lest at any time they should see with their eyes, and hear with their
   ears, and should understand with their heart, and should be converted,
   and I should heal them.

2. Acts 28:27 – for the heart of this people is waxed gross, and
   their ears are dull of hearing, and their eyes have they closed; lest >they
   should see with their eyes, and hear with their ears, and understand
   with their heart, and should be converted, and I should heal them.

3. Hebrews 5:11 – Of whom we have many things to say, and hard to be
   uttered, seeing ye are dull of hearing.

( AKJV )

?

Note: My seeking is to find a solution to the problem of not understanding the scriptures as the Lord would want me to understand. So better these questions are dealt together than in separate pieces as they are all, in my understanding, are related to the receiving of the “light of the knowledge” of the Glory of God in 2 Corinthians 4:6