Faith in Christ, is just that: not faith in the church, or leaders or our own ability to follow religious rules (Galatians 2:16) - but trusting in the person of Jesus Christ.  Of course, nobody can believe in Him unless they know who He is.  Therefore, it is critically important to know His identity and authority.  Today's verses explain both.
 
Firstly, Jesus Christ lived on earth as the visible manifestation of God.  He was, and is, God.  Jesus said, "Anyone who has seen me has seen the Father." (John 14:9).  John 1:18 says, "No one has ever seen God, but the one and only Son, who is himself God and is in the closest relationship with the Father, has made him known."  Hebrews 1:3 says, "The Son is the radiance of God’s glory and the exact representation of his being, sustaining all things by his powerful word. After he had provided purification for sins, he sat down at the right hand of the Majesty in heaven."  These are very big statements because they also deny many popular ideas people have about Him.  So, Jesus was not just a man - but God in a human body.
 
Secondly, Jesus is the 'firstborn over all creation'.  'Firstborn' has two meanings: 'the first to be born', and 'the one who has full legal authority to deputise for his father and to inherit the estate'.  Of those two meanings, the second only is intended, because before Christ's incarnation, He was already the Creator of everything, so His Spirit was not created.  Although He became a man, He had (and still has) the right of supremacy over the physical creation, angels and demons, and every authority structure.  He personally sustains the complexity of the cosmos, and has intimate knowledge of every person and event, even ahead of time.  So, when Jesus spoke to demons, they knew His authority and submitted (Mark 1:24): so did stormy seas, blind eyes, and loaves of bread.  By His authority water turned into wine and the dead were raised to life (Matthew 11:2-5).  All people who believe in Jesus are changed; they become children of God (John 1:12).
 
Although Christ is over all creation, He personally submitted Himself to death, accepting responsibility for all our rebellion, so that we might be made clean for the presence of God.  This Jesus was raised to life again and He now has the final word about everything.  He is the supreme ruler over everything (Philippians 2:8-11).  Is this the Jesus you believe in and worship?  The Bible says that only faith in Jesus brings salvation and peace with God (Acts 4:12).  If you are not trusting Him ... start today (www.crosscheck.org.uk).  If you are trusting, don't keep Jesus a secret!  He is wonderful: advertise Him to your friends and colleagues!