Agag ( /ˈeɪɡæɡ/; Hebrew: אגג ʾĂḡāḡ, Arabic: يأجوج) was the name of two kings of the Amalekites mentioned in the Hebrew Bible. It has been conjectured that the name was a standing title of the kings of the Amalekites. The name or title may mean "flame" in ancient Northwest Semitic.
The first Agag is mentioned very briefly by Balaam in Numbers 24.7, the context implies that he was a king, but he is not clearly stated to be an Amalekite.
The second and better-known Agag was taken alive by King Saul after destroying the Amalekites (I Samuel 15). His life was spared by Saul and the Israelites took the best of the sheep, cattle, fat calves and lambs from the Amalekites.
The prophet Samuel regarded this clemency as a defiance of the will of God, which was "to completely destroy" the Amalekites. Samuel put Agag to death at Gilgal saying that "s your sword has made women childless, so will your mother be childless among women." And so Samuel proceeded to personally cut Agag to pieces.
The story also indicates that this is the last time Samuel and Saul ever saw each other. As a result of this incident, Samuel said to Saul that "ou have rejected the word of the LORD, and the LORD has rejected you as king over Israel."
Read more about Agag: In Rabbinical Literature