Few today realize that most of the holidays which mainstream "Christianity" observes come straight out of paganism! Did you know that God gave Christians an entire series of Holy Days, which Christ and the apostles observed, but which have effectively been "trashed" by mainstream "Christianity" today? Which days should you observe—and why?
Why do most professing Christians observe Christmas, Easter and Halloween, yet fail to observe the very days that the Bible clearly commands? Does it make that much difference which days we keep? Does it affect our hope for eternal life? And does it massively impact our understanding of what kind of God we worship and what is the great purpose being worked out here on earth?