Relevance of the Resurrection

The Heidelberg Catechism provides this answer.

Q. 45. What does the “resurrection” of Christ profit us?

A. First, by his resurrection he has overcome death, that he might make us partakers of that righteousness which he had purchased for us by his death; (1 Cor 15:16; Rom 4:25; 1 Pet 1:3) secondly, we are also by his power raised up to a new life; (Rom 6:4; Col 3:1,3; Eph 2:5,6) and lastly, the resurrection of Christ is a sure pledge of our blessed resurrection. (1 Cor 15:12,20,21; Rom 8:11)