Christians believe that God is one but is known in three separate Persons:
The term Jesus as God Incarnate is the Christian belief that Jesus is God in human form. This is the part of the Trinity known as ‘God the Son’.
So God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal lifeJohn 3:16
What do Christians mean by incarnation?
The term incarnation means ‘made flesh’.