What term means 'what something is,' as in Jesus having both divine and human natures?

• A. Hypostatic Union
• B. Incarnation
• C. Trinity
• D. Nature

Answer: (D)

Nature is the word that means “what something is”—its essential kind or substance. When we talk about Jesus having both divine and human natures, we’re naming the two kinds of existence that define who he is in essence: a divine nature and a human nature. The term nature captures that basic sense of being or kind, which is why it best answers the prompt about “what something is.” The other terms refer to different ideas: incarnation is the event of God becoming flesh, hypostatic union is how those two natures are united in one person, and the Trinity is the one God in three persons. But for identifying the word that means “what something is,” nature fits precisely.