Contradiction with Exodus 7:3
This verse describes God hardening Pharaoh's heart, which contradicts Psalms 86:17 where God provides mercy and a token for good, suggesting His intention to encourage and help, not to oppose or harden hearts.
Exodus 7:3: And I will harden Pharaoh's heart, and multiply my signs and my wonders in the land of Egypt.
Contradiction with Deuteronomy 2:30
Here, God hardens Sihon's spirit, contrasting with Psalms 86:17 where there is a positive affirmation of God's supportive actions.
Deuteronomy 2:30: But Sihon king of Heshbon would not let us pass by him: for the LORD thy God hardened his spirit, and made his heart obstinate, that he might deliver him into thy hand, as [appeareth] this day.
Contradiction with Isaiah 6:10
God instructs to make the heart of the people insensitive, contrasting with Psalms 86:17's indication of God giving a positive sign.
Isaiah 6:10: Make the heart of this people fat, and make their ears heavy, and shut their eyes; lest they see with their eyes, and hear with their ears, and understand with their heart, and convert, and be healed.
Contradiction with Romans 9:18
This verse mentions God showing mercy to whom He will and hardening whom He will, which can be seen as contradictory to the gracious showing of help and favor in Psalms 86:17.
Romans 9:18: Therefore hath he mercy on whom he will [have mercy], and whom he will he hardeneth.