Kassiah is related to Cassia, from Hebrew qetsi'ah, referring to the cassia spice and fragrant bark.
Kassiah is a variant of one of the Bible's most fragrant names. The root form, Keziah (also spelled Kezia, Cassia, or Qetziah), derives from the Hebrew 'qetzi'ah,' referring to the cassia plant — a bark spice closely related to cinnamon, prized throughout the ancient Near East for its powerful, warm aroma and its use in sacred anointing oils. In the Book of Exodus, cassia is listed among the components of the holy anointing oil prepared by Moses, giving the name an immediate connection to the sacred.
In the Hebrew scriptures, Keziah is the name of Job's second daughter, born after his suffering ended and his fortunes were restored. The Book of Job describes Keziah and her sisters as the most beautiful women in the land, and uniquely for the Old Testament, grants them inheritance alongside their brothers — a striking legal departure that has made the name symbolically associated with beauty, restoration, and equal dignity. This Keziah has been a touchstone for the name's religious use across Jewish, Christian, and later Puritan communities, where biblical names carried particular moral weight.
The spelling Kassiah modernizes and softens the ancient name, replacing the austere biblical form with rounder, more lyrical letters. The double-s variant lends it visual warmth, while the '-iah' ending preserves its unmistakable Hebrew resonance. Cassia as a given name has seen growing interest in recent years among parents seeking names that are both historically substantial and phonetically beautiful — names that feel timeless rather than merely fashionable. Kassiah occupies the creative end of that spectrum, taking something ancient and wearing it with contemporary ease.