Picking the right synonym for 'ancient' when you want that Biblical translation feel is such a satisfying little puzzle — there are shades to choose from depending on whether you want formal, poetic, or the slightly archaic resonance of older Bible English. If I’m aiming for something that sounds like the language in the 'King James Version', I lean toward phrases like 'of old' or 'from of old'. Those two capture the passive, almost timeless cadence of scripture without yanking the reader into a modern register. They sit comfortably in clauses: 'the land from of old' or 'laws of old', and they echo how translators historically rendered Hebrew or Aramaic idioms that point to bygone ages.
For more elevated or cosmic senses — when you want to talk about the beginnings of the world, creation myths, or the type of deep-time authority that scripture sometimes implies — 'primeval' or 'primordial' work nicely. They’re slightly more modern than KJV phrasing but still feel weighty and ancient in a way that fits poetic translations: 'the primeval waters' or 'the primordial day'. If the passage needs a venerable, religious tone rather than scientific, 'venerable' or 'hoary' adds a sense of sacred age (hoary has that visual of age and respect). Be cautious with 'antediluvian': it’s delightfully colorful and biblical-adjacent, but it specifically connotes pre-flood antiquity and can feel tongue-in-cheek if used casually.
When translators grapple with Hebrew and Greek originals, they often must choose between literal and idiomatic tones. For literal fidelity, keeping 'ancient' or using 'of old' preserves the original cadence; for literary translation, mixing in 'primeval', 'foretime', or 'in days of yore' can give a majestic or mythic flavor. Personally, I love 'of old' for close, traditionally flavored renderings and 'primeval' when the text wants cosmic scope — both make a passage feel anchored to a long, storied past without sounding like a museum placard. In the end, the best pick depends on whether you want the reader to feel
reverence, distance, or the sweep of myth, and I usually pick the tone first then the word — it just feels right to my ear.