This is a very basic story in the Bible. It starts with the miraculous birth of Jesus. With all the challenges (moving from place to place to avay from Herold and finally giving birth in a manger) faced by the parents, the process not a smooth one hence a curve. He stayed on earth until when He was 30 before He was persecuted by Humans to be killed(that also a very rough process). On the third day He arose, met His disciples and then ascended into heaven. His return is unknown till date.