Like Jeremy, I am not a big fan of the church calendar as a necessary part of Christian obedience; but, as tomorrow is Easter Sunday, here's a clear statement on the practical power of the resurrection from Warfield's sermon on 2 Tim. 2:8:

It is, of course, to the glorified Jesus that Paul directs his own and Timothy's gaze. Or, to be more specific, it is to the regal lordship of the resurrected Jesus that he points as the Christian's strength and support. The language is compressed to the extremity of conciseness. It is difficult to convey its full force except in diluted paraphrase. Paul bids Timothy in the midst of all the besetting perplexities and dangers which encompassed him to strengthen his heart by bearing constantly in remembrance, not Jesus Christ simpliciter, but Jesus Christ conceived specifically as the Lord of the Universe, who has been dead, but now lives again and abides for ever in the power of an endless life; as the royal seed of David ascended in triumph to His eternal throne. It is not from the exaltation of Jesus alone, let us observe, that Paul draws and would have Timothy draw strength to endure in the crisis which had fallen upon their lives. It is to the contrast between the past humiliation and the present glory of the exalted Lord that he directs his eyes. He does not say simply, "Bear in mind that Jesus Christ sits on the throne of the universe and all things are under His feet," although, of course, it is the universal dominion of Jesus which gives its force to the exhortation. He says, "Bear in mind that Jesus Christ has been raised from the dead, of the seed of David--that it is He that died who, raised from the dead, sits as eternal king in the heavens." No doubt a part of the apostle's object in his allusion to the past humiliation of the exalted Lord is to constitute a connection between Jesus Christ and his faithful followers, that they may become imitators of Him. They, the viatores, may see in Him, the consummator, one who like them had Himself been viator, and may be excited to follow after Him that they too may in due time become consummatores. But the nerve of the exhortation, obviously, does not lie in this, as the very language in which it is couched sufficiently avouches. How could Timothy imitate our Lord in being of the seed of David? How could he imitate Him by ascending the throne of the universe? Fundamentally the apostle is pointing to Christ not as our example, but as our almighty Saviour. He means to adduce the great things about Him. And the central one of the great things he adduces about Him is that He has been raised from the dead.