Resurrection Sunday or Easter?

Last Supper or Passover, Resurrection or Easter? Historically and Biblically, we know the answers but decide to follow culture and tradition.  It boils down to Jesus Christ, knowing Jesus by scripture and in faith. There will be false messiahs in the end times, do we know Jesus by culture or by the Bible? Many will be led astray,  know Jesus and we will endure to the end.