Simplify the following text for a Grade 10 native English-speaking person.
Original: While there have been many theological disputes over the nature of Jesus over the earliest centuries of Christian history , Christians generally believe that Jesus is God incarnate and `` true God and true man '' ( or both fully divine and fully human ) .
Simplified: There have been many theological disagreements over the nature of Jesus over the first centuries of Christian history . But Christians generally believe that Jesus is God incarnate and `` true God and true man . ''