For those who do not know, a Divine Liturgy is defined as: “the primary worship service of the Church”. Studying the texts of liturgies is an excellent way to understand the beliefs of the Orthodox Church. Why? Because of the ancient Christian teaching known as Lex orandi, lex credendi (Latin: “the law of what is prayed [is] the law of what is believed”). Worship and belief are integral to each other in the historic Christian Faith. The sentiment is sometimes paraphrased as, “Show me how you pray (and what you pray for), and I’ll show you what you believe.” This may be shocking to some reading this, but the Church’s worship preceded the creeds, the canon of scripture, and the Church Councils. In truth, the Church’s liturgical traditions provided the theological (and doctrinal) framework for later establishing the creeds and the Biblical canon. Books circulating in the 1st Century were judged to be authentically Christian based on their adherence to established practices and beliefs as preserved through prayer and other Traditions. Not the other way around. https://orthodoxreflections.com/orthodox-prayer-to-the-saints-explained-for-protestants/