Contradiction with Psalm 44:22
While Psalm 44:17 asserts that the people have not forgotten God, Psalm 44:22 suggests that they are suffering for God's sake, indicating they might feel forgotten by Him.
Psalm 44:22: Yea, for thy sake are we killed all the day long; we are counted as sheep for the slaughter.
Contradiction with Psalm 89:50-51
This verse expresses the reproach of God's servants, which could contrast with the claim of faithfulness in Psalm 44:17 by highlighting perceived neglect.
Psalm 89:50-51: Remember, Lord, the reproach of thy servants; [how] I do bear in my bosom [the reproach of] all the mighty people;
Contradiction with Isaiah 59:2
This verse states that iniquities separate from God, contrasting with the assertion in Psalm 44:17 of not having forgotten or dealt falsely with God.
Isaiah 59:2: But your iniquities have separated between you and your God, and your sins have hid [his] face from you, that he will not hear. [have hid: or, have made him hide]
Contradiction with Jeremiah 2:32
This verse questions whether a maid can forget her ornaments, implying God's people have forgotten Him, which contradicts Psalm 44:17's claim of fidelity.
Jeremiah 2:32: Can a maid forget her ornaments, [or] a bride her attire? yet my people have forgotten me days without number.
Contradiction with John 8:44
Here, Jesus accuses some of lying and deceit, contrasting with the declaration in Psalm 44:17 of not dealing falsely.
John 8:44: Ye are of [your] father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it. [of his own: or, from his own will or disposition]