The Lord Jesus Christ was “God manifest in flesh” (1 Timothy 3.16). When He became a man on earth, He did not cease to be God. He is the “eternal God” which means that He is, He was, and He always shall be God.
Also, when He went back to heaven after His resurrection from the dead, He did not cease to be man. He is a real glorified man at God’s right hand (Hebrews 10.12).
I believe that Jesus Christ is God. This is often called His deity.
One God in Three Persons
There are many false gods everywhere, but there is only one true God. He is revealed in the Bible (John 17.3) so that we may get to know Him. But this one God is three Persons – God the Father, God the Son, and God the Holy Spirit. The three act as one, and each is equally God. Throughout the Bible, we find that sometimes each Person does something different, for example, “The Father sent the Son to be the Saviour of the world” (1 John 4.14); Peter was “filled with the Holy Spirit” (Acts 4.8). At other times, all three act as one, for example, Genesis 1.1; 17.1; 21.33. Verses which show us clearly God in three Persons are Matthew 28.19, and 2 Corinthians 13.14.
Each of the three Persons is separately and equally God, and the three are united as one. A helpful illustration of this is how we think about time. Time is made up of three parts – past, present and future. To us, each of these is different, but each is time. In a similar way we can think about water in three forms – ice, liquid water, and steam. Each is different, and each has different uses, but each is water. So we have three different Persons, Father, Son, and Holy Spirit, and each is God.
The Son of God on Earth
When the Son of God came to earth He was still God, just as He was before He came. He laid aside the position and glory of God which belonged to Him. He took on the form of a man so that He might experience “death on a cross” (Philippians 2.6-8). But He did not give up His deity. The man who lived and died was the Son of God. He was God the Son.