Sanballat was the governor of Samaria during the time of Nehemiah, who led the rebuilding of the walls of Jerusalem (Neh.2.10, 19). When Sanballat heard that Nehemiah had come to seek the welfare of the children of Israel, he was deeply disturbed (Nehemiah 2:10). Along with Tobiah the Ammonite and Geshem the Arab, Sanballat mocked and ridiculed the Jews' efforts to rebuild the wall (Neh.2.19; 4.1-3). When the wall was being built, Sanballat became furious and plotted with others to attack Jerusalem and create confusion (Nehemiah 4:7–8). Despite these threats, Nehemiah and the people continued to work on the wall, setting up guards to protect against potential attacks (Nehemiah 4:9–23). Sanballat, along with Tobiah and Geshem, tried to lure Nehemiah away from the city to harm him, but Nehemiah refused to meet with them (Nehemiah 6:1–4). They also accused Nehemiah of rebelling against the king of Persia, but Nehemiah denied these allegations (Nehemiah 6:5–9). Later, Nehemiah discovered that one of the priests, Eliashib, had allied himself with Tobiah and prepared a room for him in the courts of the house of God (Nehemiah 13:4–7). Nehemiah also learned that one of Eliashib's grandsons had married Sanballat's daughter, and he drove him away (Nehemiah 13:28). Throughout the book of Nehemiah, Sanballat is portrayed as a persistent enemy who sought to hinder the rebuilding of Jerusalem and undermine Nehemiah's leadership.
Article: STEPBible, Tyndale House Cambridge · CC BY 4.0