He is the image of the invisible God (1), the firstborn (2) over all creation. For by Him all things were created that are in heaven and that are on earth (3), visible (4) and invisible (5), whether thrones or dominions or principalities or powers (6). All things were created through Him (7) and for Him (8). And He is before all things, and in Him all things consist (9). And He is the head of the body, the church (10), who is the beginning, the firstborn from the dead (11), that in all things He may have the preeminence (12). Colossians 1:15-18

1) Jesus Christ is the image of God.
Philip said to Him, “Lord, show us the Father, and it is sufficient for us.” Jesus said to him, “Have I been with you so long, and yet you have not known Me, Philip? He who has seen Me has seen the Father; so how can you say, ‘Show us the Father’? Do you not believe that I am in the Father, and the Father in Me? The words that I speak to you I do not speak on My own authority; but the Father who dwells in Me does the works. Believe Me that I am in the Father and the Father in Me, or else believe Me for the sake of the works themselves." John 14:8-11

2) Firstborn means preeminent or most important.
For whom He foreknew, He also predestined to be conformed to the image of His Son, that He might be the firstborn among many brethren. Romans 8:29

3) Jesus Christ created all things.
In the beginning God created the heavens and the earth. Genesis 1:1

4) Jesus Christ created visible mankind.
This is the book of the genealogy of Adam. In the day that God created man, He made him in the likeness of God. He created them male and female and blessed them and called them Mankind in the day they were created. Genesis 5:1-2

5) Jesus Christ created invisible Satan.
You were in Eden, the garden of God; Every precious stone was your covering: The sardius, topaz, and diamond, beryl, onyx, and jasper, sapphire, turquoise, and emerald with gold. The workmanship of your timbrels and pipes was prepared for you on the day you were created. You were the anointed cherub who covers; I established you; You were on the holy mountain of God; You walked back and forth in the midst of fiery stones. You were perfect in your ways from the day you were created, till iniquity was found in you. Ezekiel 28:13-15

6) Jesus Christ created kings, kingdoms, and earthly powers.
“Thus says the LORD to His anointed, to Cyrus, whose right hand I have held— To subdue nations before him and loose the armor of kings, to open before him the double doors, so that the gates will not be shut: ‘I will go before you and make the crooked places straight; I will break in pieces the gates of bronze and cut the bars of iron. I will give you the treasures of darkness and hidden riches of secret places, that you may know that I, the LORD, Who call you by your name, am the God of Israel. For Jacob My servant’s sake, and Israel My elect, I have even called you by your name; I have named you, though you have not known Me. I am the LORD, and there is no other; There is no God besides Me. I will gird you, though you have not known Me, that they may know from the rising of the sun to its setting that there is none besides Me. I am the LORD, and there is no other; I form the light and create darkness, I make peace and create calamity; I, the LORD, do all these things.’” Isaiah 45:1-7

7) All things were created through Jesus Christ.
In the beginning was the Word, and the Word was with God, and the Word was God. He was in the beginning with God. All things were made through Him, and without Him nothing was made that was made. John 1:1-3

8) All things were created for Jesus Christ.
For He has not put the world to come, of which we speak, in subjection to angels. But one testified in a certain place, saying: “What is man that You are mindful of him, or the son of man that You take care of him? You have made him a little lower than the angels; You have crowned him with glory and honor and set him over the works of Your hands. You have put all things in subjection under his feet.” Hebrews 2:5-8

9) All things consist by Jesus Christ.
For even if there are so-called gods, whether in heaven or on earth (as there are many gods and many lords), yet for us there is one God, the Father, of whom are all things, and we for Him; and one Lord Jesus Christ, through whom are all things, and through whom we live. 1 Corinthians 8:5-6

10) Jesus Christ is the head of the church.
And He put all things under His feet and gave Him to be head over all things to the church, which is His body, the fullness of Him who fills all in all. Ephesians 1:22-23
Note: A pastor, prophet, or pope is not the head of the church.

11) Jesus Christ is the most important from the dead.
John, to the seven churches which are in Asia: Grace to you and peace from Him who is and who was and who is to come, and from the seven Spirits who are before His throne, and from Jesus Christ, the faithful witness, the firstborn from the dead, and the ruler over the kings of the earth. To Him who loved us and washed us from our sins in His own blood and has made us kings and priests to His God and Father, to Him be glory and dominion forever and ever. Amen. Revelation 1:4-6

12) Jesus Christ is the most important person to a Christian.
If anyone does not love the Lord Jesus Christ, let him be accursed. O Lord, come! The grace of our Lord Jesus Christ be with you. My love be with you all in Christ Jesus. Amen. 1 Corinthians 16:22-24