Summary: How could we perceive the Glory of God?
"For what we proclaim is not ourselves, but Jesus Christ as Lord, with ourselves as your servants for Jesus' sake. For God, who said, 'Let light shine out of darkness,' has shone in our hearts to give the light of the knowledge of the glory of God in the face of Jesus Christ.
Just what is the glory of God?
No one on earth or in heaven knew the Father so well like Jesus. And while we would address God as Loving, Almighty, Merciful, etc.
Now, what is the connection between the Holiness and the Glory of God?
We read in Isaiah 6:2-3 (quickview) , "Above him stood the seraphim. Each had six wings: with two he covered his face, and with two he covered his feet, and with two he flew. And one called to another and said: 'Holy, holy, holy is the LORD of hosts; the whole earth is full of his glory!'" (ESV.)
Dr. John Piper said that the Glory of God is the manifestation of His Holiness. He also added, "The holiness of God is His concealed glory. The glory of God is His revealed holiness."
While in Isaiah 6:3 (quickview) , we read the last part: "... the whole earth is full of his glory," in Psalm 19:1 (quickview) , we read: "The heavens declare the glory of God, and the sky above proclaims his handiwork."
One night, my wife and I were in our rooftop and we were surprised by a "wonderful performance" in the sky! Several "shooting stars" (or meteor showers) zipped silently, but swiftly and successively above us. The scene was stunning! My wife who was more expressive blurted out, "Wooww!"
In His prayer in John 17 (quickview) , Jesus said partly: "And now, Father, glorify me in your own presence with the glory that I had with you..." (verse 5.) To be with the "Father of Glory" (Ephesians 1:17 (quickview) ) is supremely wonderful! And like Jesus, we ought to long for to be in His glorious Glorious Presence, for in His presence there is fullness of joy; at His right hand are pleasures forevermore (Psalm 16:11 (quickview) ).
That's also the desire of Jesus for the elect, as He prayed: "Father, I desire that they also, whom you have given me, may be with me where I am, to see my glory that you have given me..." (John 17:24 (quickview) .)
It's beyond our human comprehension to fully appreciate the glory of God. We read in Romans 8:18 (quickview) , "For I consider that the sufferings of this present time are not worth comparing with the glory that is to be revealed to us."
And notice carefully the reply of God: "I will make all my goodness pass before you and will proclaim before you my name 'The LORD.' And I will be gracious to whom I will be gracious, and will show mercy on whom I will show mercy" (verse 19).