The Last Supper, vector-bitmap recreation, of the work created at the end of the 15th century by Leonardo Da Vinci.

Holy Week commemorates the Passion, Death, and Resurrection of Jesus of Nazareth, beginning with Palm Sunday, which recalls his messianic entry into Jerusalem. Holy Thursday celebrates the institution of the Eucharist at the Last Supper and Jesus washing the feet of his disciples. Good Friday evokes the crucifixion and death of Jesus. The Easter Vigil, on the night of Holy Saturday into Easter Sunday, proclaims his Resurrection, the foundation of Christian faith: "And if Christ has not been raised, our preaching is useless and so is your faith" (1 Corinthians 15:14). The term "resurrection" derives from Latin resurrectio (from resurgo: to rise, rebirth), referring to giving new life.

Related readings: 1 Corinthians 15:3-7; Matthew 28:1-8; Mark 16:1-8; Luke 24:1-10; John 20:1-10; Acts 10:37-43; Hebrews 11:1; 2 Corinthians 3:12.

Celebrations include painted eggs, a universal emblem of new life and spring fertility, alongside family banquets that promote intergenerational connection and social well-being. For more on the Easter liturgy, see Vatican News and the World Council of Churches for the ecumenical date calculation.

Jewish Passover, or Pesach, commemorates the liberation of the Jewish people from slavery in Egypt, as recounted in the Exodus narrative of the Torah. It is celebrated for eight days (seven in Israel) beginning on the 15th of Nisan in the Hebrew calendar, which typically falls between late March and late April in the Gregorian calendar. In 2026, for example, it begins at nightfall on April 1, with the Pesach Seder as the central ritual that recounts the story through the reading of the Haggadah. The Seder includes four cups of wine (symbolizing the stages of redemption), bitter herbs (maror, representing oppression), matzah (unleavened bread, evoking the haste of the Exodus), and a symbolic plate featuring items such as the zeroa (shank bone of the Paschal sacrifice) and charoset (a sweet mixture symbolizing the mortar used by the enslaved Israelites). For a detailed Seder guide, see Chabad.org.

The tradition emphasizes themes of freedom, resilience, and family renewal, fostering intergenerational storytelling that strengthens community cohesion. Rabbinic traditions and academic perspectives value its role as a foundational narrative, promoting empathy and collective hope beyond strictly historical interpretations, in line with studies highlighting rituals as tools for group emotional stability.

Orthodox Easter follows the Julian calendar for date calculation, setting it on April 12, 2026, uniting Greek, Russian, Ethiopian, and Romanian churches in a vibrant celebration of Jesus' Resurrection, emphasizing collective synchronies that enhance social connection. For details on date determination, see Greek Orthodox Archdiocese.

3.1. Preparations and Fasts

It is preceded by a Great Fast of 40-55 days, culminating in Orthodox Holy Week. In Ethiopia (Fasika), it lasts 55 days, promoting spiritual and communal purification through repetitive practices that, per interdisciplinary views, activate physiological cohesion mechanisms.

3.2. Key Liturgies and Rituals

The Easter Vigil begins at midnight on Holy Saturday with the Midnight Service, proclaiming "Christ is Risen!" (Christos Anesti in Greek). It includes candlelit processions, the Kanoun (Paschal candle), and the Divine Liturgy of St. John Chrysostom.

3.3. Regional Customs

In Greece, tsougrisma—clashing red eggs (symbolizing the empty tomb and Christ's blood)—fosters playful interaction and good fortune, illustrating how simple synchronies build mutual trust.

In Russia, kulich (sweet bread) and paskha (creamed cheese) are shared, reinforcing communal banquets. In Orthodox Hungary, dawn walks evoke the Calvary, promoting emotionally accessible renewal, aligned with evidence of rituals reducing collective stress.

Easter celebrations adapt Christian rituals to cultural contexts, highlighting rebirth and community through synchronized practices that foster prosociality.

From secular perspectives, such as scientific realism, Easter offers metaphors of renewal and human resilience, without requiring supernatural faith.

Shared rituals foster social cohesion and hope in crises, universally accessible.

Easter rituals activate dopamine/oxytocin, reduce cortisol through motor synchrony. Studies confirm social cohesion benefits regardless of belief:

• Physiological synchrony increases cooperation (PubMed: 29317675)
• Intentional dance builds trust (PubMed: 23951106)
• Minimal rituals predict wellbeing (PubMed: 30610910)