en_tn_condensed/neh/04/01.md

Now when Sanballat

Here Nehemiah uses the word "now" to signal a new part of the story.

Sanballat ... Tobiah

These are the names of a men. See how you translated this in Nehemiah 2:10. (See: rc://en/ta/man/translate/translate-names)

it burned within him, and he was furiously angry

Here "it" refers to Sanballat's realization that the Jews are rebuilding the walls. This speaks of Sanballat becoming very angry as if his anger were a burning fire. Alternate translation: "he became furiously angry" or "he became very angry" (See: rc://en/ta/man/translate/figs-metaphor)