The number 721 has no well-established symbolic meaning in biblical numerology, but appears as a specific figure in Nehemiah 7:37.
The number 721 appears in Nehemiah 7:37 as the count of descendants from Lod, Hadid, and Ono who returned from exile in Babylon. Although the number does not have an acknowledged symbolic or numerological meaning within traditional biblical or Jewish number symbolism, its biblical context is linked to the rebuilding of God's people after the exile. Its occurrence in Nehemiah places the number in a setting of restoration and return, where precise censuses documented who belonged to God's people. The year 722/721 BC is associated with Assyria's conquest of Samaria and the exile of the ten northern tribes (2 Kings 17:5–6). The exact dating varies among sources, but the event is one of the most pivotal in biblical history. Lod, Hadid, and Ono were towns in the Benjamin region near the coastal plain. They are also mentioned in Ezra 2:33, where the corresponding number is 725, a small variation that may be due to different counting times or manuscript traditions. In gematria, various Hebrew words and phrases may sum to 721, but there is no broad consensus on a specific symbolic interpretation linked to this number in traditional Jewish numerology.*