So what do we do to make the Messiah, the Christ relevant to 21st century people?
Nothing.
We don't.
Because it is His story and for us to become relevant, we need to become part of His story.
We do that by taking Him up on His offer of salvation.
For He has rescued us from the dominion of darkness, and brought us into the kingdom of the Son He love, in whom we have redemption, the forgiveness of sins.---Col.1:13,14