It sounds like you're asking about a hymn that combines the acclamation "Hail" with the profound declaration "Holy, Holy, Holy Lord." This phrase primarily points to two deeply significant elements in Christian worship: 1. **The famous hymn "Holy, Holy, Holy! Lord God Almighty!"** by Reginald Heber. 2. **The ancient liturgical chant known as the "Sanctus"** (meaning "Holy"), which is part of nearly all Christian Eucharistic services. Let's break down the history of these two, as your phrase likely touches on both.

1. The Hymn: "Holy, Holy, Holy! Lord God Almighty!" This is arguably the most famous hymn associated with the phrase "Holy, Holy, Holy Lord." * **Author:** **Reginald Heber** (1783-1826), an Anglican bishop and hymn writer. * **Date Written:** Heber wrote it around **1826**, specifically for **Trinity Sunday**, to help his congregation grasp the doctrine of the Holy Trinity (God as Father, Son, and Holy Spirit). * **Scriptural Inspiration:** The hymn is directly inspired by the vision in **Revelation 4:8**, where the four living creatures around the throne of God continually cry out: "Holy, holy, holy, Lord God Almighty, who was, and is, and is to come!" It also draws from **Isaiah 6:3**, where seraphim cry "Holy, holy, holy is the LORD of hosts; the whole earth is full of his glory!" * **The Tune:** While Heber wrote the lyrics, the widely recognized tune, **"Nicaea,"** was composed specifically for this hymn by **John Bacchus Dykes** in **1861**. The name "Nicaea" refers to the Council of Nicaea (325 AD), which formulated the Nicene Creed, affirming the doctrine of the Trinity. * **Themes:** The hymn beautifully describes the majesty, holiness, omnipotence, and timelessness of God, seen through the lens of the Trinity. It depicts both the heavenly worship and our earthly participation in it. * **Popularity:** It quickly became, and remains, one of the most beloved and widely sung hymns across nearly all Christian denominations worldwide. **Regarding the "Hail" Prefix:** While Heber's hymn famously begins "Holy, Holy, Holy! Lord God Almighty!" and doesn't typically include "Hail" at the beginning, it's possible: * You are recalling another hymn that *does* begin with "Hail" and also invokes the "Holy, Holy, Holy Lord." * The "Hail" is an acclamation or an interpretation that you associate with the reverence for the "Holy, Holy, Holy Lord." * It could be a less common variant or adaptation, or a slight blending with other liturgical acclamations.

2. The Liturgical "Sanctus" (Holy, Holy, Holy Lord God of Hosts) The core phrase "Holy, Holy, Holy Lord" has a history much older than Heber's hymn, rooted in the ancient liturgy of the Christian Church, and before that, in Jewish tradition. * **Origin:** The "Sanctus" is one of the oldest parts of the Christian liturgy, dating back to the earliest centuries of the Church. It directly incorporates the seraphim's song from **Isaiah 6:3** ("Holy, holy, holy is the LORD of hosts; the whole earth is full of his glory!") and is echoed in **Revelation 4:8**. * **Jewish Roots:** The concept itself comes from the Jewish **Kedusha** prayer, a doxology (a liturgical expression of praise to God) recited during synagogue services, which also begins with the threefold "Kadosh, Kadosh, Kadosh" (Holy, Holy, Holy). * **Role in Worship:** The "Sanctus" is sung or recited as part of the Anaphora (Eucharistic Prayer) in almost all Christian liturgies (Catholic Mass, Anglican/Episcopal Eucharist, Orthodox Divine Liturgy, Lutheran services, etc.). It typically follows the Preface Dialogue and calls the congregation to join the angels and saints in their heavenly praise of God. * **Common English Translation:** "Holy, Holy, Holy Lord God of Hosts (or "Lord God of power and might"), Heaven and earth are full of your glory. Hosanna in the highest. Blessed is he who comes in the name of the Lord. Hosanna in the highest." * **"Hail" and the Sanctus:** While the Sanctus itself doesn't start with "Hail," the entire context of its recitation is an act of adoration and acclamation ("Hail" being a form of acclamation or reverent greeting). It's not uncommon for hymns or more contemporary worship songs to rephrase or introduce these ancient liturgical texts with various acclamations. **In summary:** When you say "Hail Holy Holy Holy Lord hymn," you are most likely referring to the spirit and content of **Reginald Heber's "Holy, Holy, Holy! Lord God Almighty!"**, which eloquently expands on the ancient biblical cry of praise. The core phrase "Holy, Holy, Holy Lord" itself is much older, stemming from the **liturgical "Sanctus,"** which has been a staple of Christian worship for nearly two millennia, directly invoking the heavenly praise of God as found in Isaiah and Revelation. The "Hail" might be an added layer of acclamation, perhaps from a specific rendition or simply reflective of the hymn's adoring nature.