The book of Colossians gives us a glimpse of who Jesus is in the  New Testament (N.T).

While the book of  Ephesians talks about the Church of Christ, the book of Colossians talks about the Christ of the Church. The book of Colossians is divided into two main parts; the 1st half (chapter 1 and 2)  is primarily doctrinal in nature, while the 2nd half (chapters 3 and 4) is practical.

The main theme in this book of Colossians is that Christ is Head of the body (the Church) (Colossians 1:18), and the  Hope of Glory (Colossians 1:27). He is
– not only FIRST, He is the FOREMOST;
– not only the PRIORITY, He is the PREEMINENT;
– not only FROM THE BEGINNING, but HE is the BEGINNING (Colossians 1:18)
– not only the AGENT of creation, but the REASON for creation (Colossians 1:16)
– not only the IMAGE of the Invisible God, but the FULLNESS of Godhead bodily (Colossians 1:15)

How do you see something that is invisible? What makes something invisible? The light emitted from the source is not detectable to the human eye. Light travels in the form of a wave and reaches the receptors in the eye that our brain interprets visually. God is spirit and in our humanness we cannot see him unless we have the specialized receptor in us, who is Christ.

When you want to write a secret, you can write with lemon juice and hold the paper behind a light source to read. God has written his love in all of Creation, in our lives, etc. We cannot see his inscription, unless we hold a light source behind his inscription and that light source is Jesus Christ – none other. Jesus said, I am the LIGHT of the World (John 14:6). We can discern the love story of God and his story by holding the Scripture in front of Christ Jesus.

In Colossians, Jesus Christ is the Head of the body, the Hope of Glory, the image of the invisible God.

Colossians 1:12-22 (KJV)
12
Giving thanks unto the Father, which hath made us meet to be partakers of the inheritance of the saints in light:
13 Who hath delivered us from the power of darkness, and hath translated us into the kingdom of his dear Son:
14 In whom we have redemption through his blood, even the forgiveness of sins:
15 Who is the image of the invisible God, the firstborn of every creature:
16 For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him:
17 And he is before all things, and by him all things consist.
18 And he is the head of the body, the church: who is the beginning, the firstborn from the dead; that in all things he might have the preeminence.
19 For it pleased the Father that in him should all fulness dwell;
20 And, having made peace through the blood of his cross, by him to reconcile all things unto himself; by him, I say, whether they be things in earth, or things in heaven.
21 And you, that were sometime alienated and enemies in your mind by wicked works, yet now hath he reconciled
22 In the body of his flesh through death, to present you holy and unblameable and unreproveable in his sight: