Contradiction with Exodus 20:3
"Thou shalt have no other gods before me" contradicts the acknowledgment in 1 Samuel 12:10 of serving other gods.
Exodus 20:3: Thou shalt have no other gods before me.
Contradiction with Deuteronomy 6:14
"Ye shall not go after other gods, of the gods of the people which are round about you" contradicts the Israelites' prior actions in 1 Samuel 12:10 of serving other gods.
Deuteronomy 6:14: Ye shall not go after other gods, of the gods of the people which [are] round about you;
Contradiction with Judges 10:13
"Yet ye have forsaken me, and served other gods: wherefore I will deliver you no more" contradicts the plea for deliverance in 1 Samuel 12:10.
Judges 10:13: Yet ye have forsaken me, and served other gods: wherefore I will deliver you no more.
Contradiction with 2 Kings 17:35
"With whom the LORD had made a covenant, and charged them, saying, Ye shall not fear other gods, nor bow yourselves to them, nor serve them, nor sacrifice to them" contrasts with the behavior repented for in 1 Samuel 12:10.
2 Kings 17:35: With whom the LORD had made a covenant, and charged them, saying, Ye shall not fear other gods, nor bow yourselves to them, nor serve them, nor sacrifice to them:
Contradiction with Jeremiah 25:6
"And go not after other gods to serve them, and to worship them, and provoke me not to anger with the works of your hands; and I will do you no hurt" contradicts their acknowledged previous actions in 1 Samuel 12:10.
Jeremiah 25:6: And go not after other gods to serve them, and to worship them, and provoke me not to anger with the works of your hands; and I will do you no hurt.
Contradiction with Jeremiah 35:15
"I have sent also unto you all my servants the prophets, rising up early and sending them, saying, Return ye now every man from his evil way, and amend your doings, and go not after other gods to serve them, and ye shall dwell in the land which I have given to you and to your fathers: but ye have not inclined your ear, nor hearkened unto me" contradicts Israel's previous disobedience confessed in 1 Samuel 12:10.
Jeremiah 35:15: I have sent also unto you all my servants the prophets, rising up early and sending [them], saying, Return ye now every man from his evil way, and amend your doings, and go not after other gods to serve them, and ye shall dwell in the land which I have given to you and to your fathers: but ye have not inclined your ear, nor hearkened unto me.