复活节的起源可以追溯到古代的犹太人节日——逾越节（Passover）。逾越节是犹太人纪念上帝解救他们脱离埃及奴隶制度的日子。在逾越节期间，犹太人会吃无酵饼，以纪念他们在逃离埃及时匆忙离开，没有时间让面团发酵。

在公元一世纪，基督教教派也开始庆祝逾越节。基督教徒相信，逾越节是耶稣被钉在十字架上的日子。据圣经记载，耶稣在逾越节之后的第三天复活了。这个事件成为了基督教复活节的起源。

复活节的日期与逾越节有关。基督教复活节是在每年春天的第一个星期日庆祝的。这个日期是根据春分月圆日来确定的。春分月圆日是指春分当天满月的日子。因为逾越节是根据犹太历来计算的，所以复活节的日期也受到犹太历的影响。

在基督教复活节期间，人们会参加教堂活动，如祈祷、唱诗和听传教士讲道。人们也会进行一些传统的庆祝活动，如挂彩蛋和吃复活节糖果。这些传统的庆祝活动源于古代的异教徒习俗，但现在已经成为了基督教复活节的一部分。

The origin of Easter can be traced back to the ancient Jewish holiday - Passover. Passover is the day when Jews commemorate God's salvation of them from Egyptian slavery. During Passover, Jews eat unleavened bread to remember that they left Egypt in a hurry and didn't have time to let the dough rise.

In the first century AD, Christian sects also began to celebrate Passover. Christians believe that Passover is the day when Jesus was crucified. According to the Bible, Jesus rose from the dead on the third day after Passover. This event became the origin of Christian Easter.

The date of Easter is related to Passover. Christian Easter is celebrated on the first Sunday of spring every year. This date is determined by the spring equinox full moon day. The spring equinox full moon day refers to the day when the full moon falls on the day of the spring equinox. Because Passover is calculated according to the Jewish calendar, the date of Easter is also influenced by the Jewish calendar.

During Christian Easter, people participate in church activities such as prayer, singing and listening to preachers. People also engage in some traditional celebrations, such as hanging Easter eggs and eating Easter candy. These traditional celebrations originated from ancient pagan customs, but now they have become part of Christian Easter.