The Seal of an Assassin
This is the first to be found and what makes this seal especially interesting is that the king who owned the seal, a certain Ba'alis, is also referred to in the Bible. When the Babylonians conquered Judah in the early 6th century BCE and destroyed Jerusalem, they made Gedaliah, a member of a prominent Jerusalem family, governor of Judah. But he was soon murdered, an event still commemorated in Jewish tradition by an annual fast. The assassin was sent by none other than Ba'alis, King of the Ammonites.

The Sons of Ammon
Archaeology has also uncovered a reference to the Ammonite’s on an ancient bronze bottle. Found near Ammon, Jordan, the relic belonged to Amminadab the first, king of the Ammonites.(650 B.C.) It is engraved with the words: “The Sons of Ammon.”

Shalmaneser's Monolith
Another famous artifact known as the monolith inscription, from Shalmaneser, mentions the leader of an Ammonite army along with Ahab the king of Israel.

The inscription reads:

"To strengthen his forces he was assisted by Hadadezer of Damascus who had 1,200 chariots and cavalrymen, along with 20,000 soldiers on foot . . . 2,000 chariots and 10,000 troops of Ahab from Israel . . . military forces of Basa, the son of Ruhubi, the Ammonite. Combined they numbered twelve kings."


Scriptures
Jeremiah 40:14 And said unto him, Dost thou certainly know that Baalis the king of the Ammonites hath sent Ishmael the son of Nethaniah to slay thee? But Gedaliah the son of Ahikam believed them not.

2 Samuel 10:1 And it came to pass after this, that the king of the children of Ammon died, and Hanun his son reigned in his stead.

Judges 11:12 And Jephthah sent messengers unto the king of the children of Ammon, saying, What hast thou to do with me, that thou art come against me to fight in my land?