What more do we need to say? YESS (with a double S) spells it out perfectly.
When our favourite team scores a goal or hits a home run we say, YESS! When our income tax refund is more than we expected we shout, YESS!. When we open a gift and it's something we love but never thought we'd receive we exclaim, YESS!
When a crucified "Man of Sorrows" bursts forth from the tomb, defeating death and the grave why shouldn't we let loose with a loud, YESS! Christ is risen! He is alive for evermore and we can have life eternal in and through Him.