Simplify the following text for a Grade 11 native English-speaking person.
Original: The death and resurrection of Jesus are usually considered the most important events in Christian Theology , partly because they demonstrate that Jesus has power over life and death and therefore has the authority and power to give people eternal life .
Simplified: Christians believe the resurrection of Jesus to be the main part of their faith ( see 1 Corinthians 15 ) and the most important event in human history , because it would show that Jesus has power over death and has the authority to give people eternal life . Among Christian beliefs , the death and resurrection of Jesus are two main events of Christian doctrine and theology .