Contradiction with Numbers 23:19
This verse states that God does not repent, whereas Psalms 106:45 mentions that God repents according to His mercies.
Numbers 23:19: God [is] not a man, that he should lie; neither the son of man, that he should repent: hath he said, and shall he not do [it]? or hath he spoken, and shall he not make it good?
Contradiction with 1 Samuel 15:29
Here it is mentioned that God will not lie or repent, in contrast to Psalms 106:45 where it notes God's repentance.
1 Samuel 15:29: And also the Strength of Israel will not lie nor repent: for he [is] not a man, that he should repent. [Strength: or, Eternity, or, Victory]
Contradiction with Ezekiel 24:14
This verse indicates that God will not repent, which opposes the statement in Psalms 106:45 that God repented out of His great mercies.
Ezekiel 24:14: I the LORD have spoken [it]: it shall come to pass, and I will do [it]; I will not go back, neither will I spare, neither will I repent; according to thy ways, and according to thy doings, shall they judge thee, saith the Lord GOD.
Contradiction with Hebrews 7:21
This verse asserts the Lord's oath and unrepentance, differing from Psalms 106:45 where God's repentance is mentioned.
Hebrews 7:21: (For those priests were made without an oath; but this with an oath by him that said unto him, The Lord sware and will not repent, Thou [art] a priest for ever after the order of Melchisedec:) [without...: or, without swearing of an oath]