There is only one God. And God is three persons: God the Father, God the Son, God the Holy Spirit. This is called the trinity.
Jesus has always been and will always be God the Son. Jesus is the image of God and has the same glory as God the Father. When Jesus came to earth, he was completely human and completely God at the same time (see: John 1-2, 10, 14, 18; 8:58-59; 17:5; 20:28; Romans 9:5; Philippians 2:6-8; Colossians 1:15-19; 2:9; Titus 2:13; Hebrews 1:2-3; 2 Peter 1:1).