The best way to understand the real meaning of Easter would be from Jesus. As is recorded in the 12th chapter of John, Jesus was welcomed to Jerusalem by a large crowd singing praises to Him, carrying palm branches and hailing Him as the King of Israel – the Messiah. They were gathering to celebrate Passover and such an outpouring of adoration made the Pharisees seeth with anger and disgust. They did not believe Jesus was their long-awaited King.
Jesus replied, “Now the time has come for the Son of Man to enter into his glory. I tell you the truth, unless a kernel of wheat is planted in the soil and dies, it remains alone. But its death will produce many new kernels—a plentiful harvest of new lives. Those who love their life in this world will lose it. Those who care nothing for their life in this world will keep it for eternity. Anyone who wants to be my disciple must follow me, because my servants must be where I am. And the Father will honor anyone who serves me.”John 12:23-26
Probably a puzzling speech at the time. Jesus had to die and be “planted” in a tomb to rise up and produce a harvest of life everlasting to those who believed in Him. (After His resurrection, the parable of the kernel of wheat could be fully understood.)