Contradiction with Exodus 20:3
This verse states "Thou shalt have no other gods before me," which contradicts the notion in 1 Samuel 26:19 about being driven to serve other gods.
Exodus 20:3: Thou shalt have no other gods before me.
Contradiction with Deuteronomy 6:14
It commands "Ye shall not go after other gods, of the gods of the people which are round about you," opposing the idea of being compelled to worship other gods mentioned in 1 Samuel 26:19.
Deuteronomy 6:14: Ye shall not go after other gods, of the gods of the people which [are] round about you;
Contradiction with Joshua 23:7
This verse advises not to mention or serve other gods, contradicting the concept in 1 Samuel 26:19 that implies a forced allegiance to other deities.
Joshua 23:7: That ye come not among these nations, these that remain among you; neither make mention of the name of their gods, nor cause to swear [by them], neither serve them, nor bow yourselves unto them:
Contradiction with 2 Kings 17:35
It declares that the LORD had commanded them, saying, "Ye shall not fear other gods," contradicting the concept of being driven to serve other gods that is stated in 1 Samuel 26:19.
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," is a clear directive that contradicts the implication of serving other gods found in 1 Samuel 26:19.
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 Hosea 13:4
"Thou shalt know no god but me," directly contradicts the possibility of serving other gods as suggested in 1 Samuel 26:19.
Hosea 13:4: Yet I [am] the LORD thy God from the land of Egypt, and thou shalt know no god but me: for [there is] no saviour beside me.