Eliahs is a spelling variant of Elias, from Hebrew Eliyahu, meaning 'my God is Yahweh.'
Eliahs is a distinctive orthographic variation of Elias, itself the Greek and Latin form of the great Hebrew prophet's name Elijah — Eliyahu in Hebrew, meaning my God is Yahweh or Yahweh is my God. Elijah stands as one of the most dramatic figures in the entire Hebrew Bible: the prophet who confronted the prophets of Baal on Mount Carmel, who heard the voice of God not in earthquake or fire but in a still small voice, and who was taken to heaven in a chariot of fire without tasting death. In Jewish tradition he is the herald of the Messiah, and a cup of wine is set for him at every Passover seder.
The Greek form Elias spread through the Byzantine world and medieval Christianity, carried by saints across Eastern Europe, the Middle East, and the Iberian Peninsula. It became a standard name in Greek Orthodox, Catholic, and Protestant communities alike, appearing in records from the early medieval period onward. By the Renaissance, Elias was common across Europe in various forms — Elijah in English-speaking Protestant communities, Eliasz in Polish, Ilija in Serbian and Croatian, Elías in Spanish and Portuguese.
The addition of the terminal -s in Eliahs subtly archaises the name, giving it a scriptural quality that sets it apart from both the modern Elijah and the classical Elias. For contemporary parents, Eliahs offers a name with unimpeachable depth — prophetic, musical in its four syllables, weighty with centuries of spiritual history — while the unusual spelling ensures a child carrying it will always be asked about it, always have a story to tell.