BTW, we do not believe that Jesus suffered to satisfy the Father's need for justice aka penal substitution. As the Paschal Homily of St. John Chrysostom is read in every Orthodox church on Pascha:
Let no one weep for his iniquities, for pardon has shown forth from the grave. Let no one fear death, for the Savior’s death has set us free. He that was held prisoner of it has annihilated it. By descending into Hell, He made Hell captive. He embittered it when it tasted of His flesh. And Isaiah, foretelling this, did cry: Hell, said he, was embittered, when it encountered Thee in the lower regions. It was embittered, for it was abolished. It was embittered, for it was mocked. It was embittered, for it was slain. It was embittered, for it was overthrown. It was embittered, for it was fettered in chains. It took a body, and met God face to face. It took earth, and encountered Heaven. It took that which was seen, and fell upon the unseen.
O Death, where is your sting? O Hell, where is your victory? Christ is risen, and you are overthrown. Christ is risen, and the demons are fallen. Christ is risen, and the angels rejoice. Christ is risen, and life reigns. Christ is risen, and not one dead remains in the grave. For Christ, being risen from the dead, is become the first fruits of those who have fallen asleep. To Him be glory and dominion unto ages of ages. Amen.
Indeed, the Paschal Homily of St. John Chrysostom is the greatest Paschal Homily, even better than that of St. Athanasius that the Copts use, on account of its brevity, doctrinal richness and emotional power. Since improving upon it is unlikely, the Eastern Orthodox reuse it every Pascha, whereas the Coptic Orthodox fortunately preserve the still very beautiful prayer of St. Athanasius, and the Syriac Orthodox priests write their own homilies, which is fitting given that the West Syriac rite gives priests enormous flexibility, with nearly 90 Eucharistic prayers, and variable elements within those prayers and other liturgical services such as Vespers and Matins, for example, a choice between different prayers of the form known as the Husoyo, as our friend
@coorilose can attest.
St. Chrysostom is also known for preaching at length, which he tended to do at the ninth hour, which I rather like; I think long sermons should happen in the Divine Office, ideally in the Hours, which are by themselves extremely short, rather than at Matins, Vespers or Compline, which might take too long, whereas Eucharistic homilies should be compact and mystical as opposed to cerebral, but still rational, since in all cases we are obliged to serve Reason, which is one of the meanings of the Logos, the Only Begotten Son and Word of God we know as Jesus Christ through His incarnation (John 1:1-17, which is the second of two Gospels read at the Eastern Orthodox Paschal liturgy, during the Eucharist, the first being the shorter ending of Mark during the part of the liturgy known as Paschal Matins.*
*For those interested in a liturgical excursus: in the Byzantine Rite as used by the Eastern Orthodox, Ukrainian Greek Catholics, Melkite Catholics, etc, there are seven Resurrection Gospels which are read at Matins on a repeating cycle that begin with the ending of Mark, and include lessons from the four Gospels, starting on Pascha, and one of these are read at Matins on a seven week cycle on most Sundays throughout the year, occasionally there being a proper Gospel which is read instead if memory serves. This is in addition to and separate from the eight week cycle of Tones (Modes, like in Gregorian chant), each of which has its own hymns which are the default except, for example, during Lent or Eastertide, when the hymnals known as the Triodion and Pentecostarion are used, and on feast days fixed to a specific date like the Transfiguration, the Dormition of the Theotokos, the Exaltation of the Cross, Christmas, or Theophany, when the Menaion is used. Specifically how these hymns are integrated is controlled bY a rule book known as the Typikon, of which there is the traditional Studite-Sabaite Typikon, originally used in monasteries, and used today by the Serbian, Ukrainian, Russian, Belarussian and certain other churches, such as ROCOR, and the monasteries on Mount Athos, and I think the Jerusalem Patriarchate, or at least the Holy Sepulchre, an older version of this that is used by the Russian Old Rite Orthodox or Old Believers (changing the Typikon and the way the sign of the cross was made caused a radical change in the appearance of Russian Orthodox services, causing a schism which has sadly only partially healed), and the Violakis Typikon, a greatly simplified set of rules used by most Greek Orthodox, and the Antiochians, and this was in theory inspired by the old Cathedral Typikon used at Hagia Sophia until the Venetian invasion in 1204, but actually the Cathedral Typikon was quite different.
The interesting thing about the Typikon is that it the Studite-Sabaite Typikon used by the Athonite monks and the more traditional Orthodox churches like the Serbians and ROCOR, is that it repeats on a 537 year cycle, so essentially no two Orthodox liturgies one might attend in ones life would be identical. This is because there are several different ways the fixed feasts, the movable feasts, and the ordinary Sundays and weekdays after the end of the Pentecostarion the Sunday after All Saints Day (the second Sunday after Pentecost) interact with each other, and the eight week cycle of hymns in the Octoechos, and the seven week cycle of Resurrection Gospels. Thus simple rules combine to create a complex system.
However, most of this complexity goes into Matins, which is either celebrated along with Vespers, Compline and Prime at All Night Vigils, which due to abbreviations takes two and a half hours, or is celebrated before the liturgy where it takes an hour, again due to abbreviations. The Russians and Ukrainians often do All Night Vigils every Saturday evening (which becomes Sunday on liturgical time as soon as Vespers happens), while Greeks and Romanians like to do a shorter one hour Vespers or on occasion a slightly longer Great Vespers, and then Orthros (Matins) before the Liturgy. The Divine Liturgy, the principle Eucharistic service, is highly invariant in the Eastern Orthodox liturgy, with fewer parts changing than in the Roman missal or especially the old Gallican liturgies such as the Mozarabic Rite, where the entire Mass can be radically altered by changes in the propers from Sunday to Sunday. There are fewer propers that influence the Divine Liturgy, but they do exist, for example, the Scripture lessons, certain hymns, and whether to use the Divine Liturgy of St. John Chrysostom or the longer Divine Liturgy of St. Basil, or a Vesperal Divine Liturgy of St. Basil, or the Presanctified Liturgy of St. Gregory.