Ahijah was a prophet of Israel, who shares some striking similarities with Samuel. Both were from Shiloh and and both were appointed to anoint new kings for Israel; Saul in the case of Samuel, and Jeroboam in the case of Ahijah. Both kings proved failures after which the prophets announced their downfalls and named their successors, David and Baasha respectively.
Ahijah's first appearance in the Bible was when he met Jeroboam, who was at the time in charge of the whole labor force of the country, and travelling to Jerusalem.
Ahijah took hold of the new cloak he was wearing and tore it into twelve pieces. Then he said to Jeroboam, "Take ten pieces for yourself, for this is what the LORD , the God of Israel, says: 'See, I am going to tear the kingdom out of Solomon's hand and give you ten tribes. But for the sake of my servant David and the city of Jerusalem, which I have chosen out of all the tribes of Israel, he will have one tribe. (1 Kings 11:30-32)
Years later, Jeroboam's son Abijah became sick. Wanting to know the fate of his child, the king told his wife to disguise herself and go to Ahijah and ask the prophet what was to become of the boy.
Ahijah was old and blind, but God had already revealed to him who the woman was and the purpose of her visit. No sooner did she enter, he deliverered God's message of wrath. Not only would the child die, he would be the last in the family to be buried; the rest would be devoured by birds and dogs. His final words to her are terrifying.
And the LORD will strike Israel, so that it will be like a reed swaying in the water. He will uproot Israel from this good land that he gave to their forefathers and scatter them beyond the River, because they provoked the LORD to anger by making Asherah poles. And he will give Israel up because of the sins Jeroboam has committed and has caused Israel to commit." (1 Kings 14:15-16)