A Rasul (Messenger with a new Law) and a Nabi (Prophet who upholds existing Law) in the way Islamic theology does.
1. Linguistic Distinction
The Hebrew language has two distinct words, but they are not used to classify prophets hierarchically.
Nabi (נָבִיא): The standard word for "Prophet."
Meaning: "Spokesperson" or "one who is called."
Usage: Used for all major biblical figures (Abraham, Moses, Samuel, Isaiah).
Mal'akh (מַלְאָךְ): The word for "Messenger."
Meaning: One sent to deliver a message [new message by default, that no one knew, from High Office] or perform a specific task.
Usage: Usually translated as "Angel" (divine messenger). Occasionally used for human prophets (e.g., the prophet Haggai is called a mal'akh in Haggai 1:13, and the name "Malachi" literally means "My Messenger").
2. Conceptual Distinction
While the Old Testament calls almost all these figures Nabi, it does structurally distinguish Moses in a way that aligns with the Islamic concept of Rasul.
Moses (The Lawgiver):
He is the only figure who brought the Torah (the Law/Scripture).
The Bible explicitly separates him from all other prophets: "There has not arisen a prophet since in Israel like Moses, whom the Lord knew face to face" (Deuteronomy 34:10).
Function: He established the covenant. This matches the function of a Rasul (bringing a Kitab or new Sharia).
The Later Prophets (Isaiah, Jeremiah, Ezekiel, etc.):
They did not bring new laws. Their role was to warn the people to return to the Law of Moses.
Function: This matches the function of a Nabi (confirming and enforcing the message of a previous Rasul).
Summary Table
| Concept | Hebrew Term | Islamic Equivalent | Old Testament Context |
| Prophet | Nabi | Nabi | General term for anyone speaking for God. |
| Messenger | Mal'akh | Rasul | Usually refers to Angels. Rarely applied to humans as a title. |
| Apostle (Sent One) | Shaliach | Rasul | Used in later Hebrew/Aramaic for an authorized agent; source of the Greek Apostolos. |
Conclusion: The Old Testament lumps both roles under the title Nabi (Prophet), but explicitly treats Moses as a unique category of prophet who established the Law, functioning exactly as a Rasul would in contrast to later prophets.