Nehemiah 2:10

2:10 When Sanballat the Horonite and Tobiah the Ammonite official heard all this, they were very displeased that someone had come to seek benefit for the Israelites.

Nehemiah 4:3

4:3 Then Tobiah the Ammonite, who was close by, said, “If even a fox were to climb up on what they are building, it would break down their wall of stones!”