Contradiction with Matthew 5:44
While Psalms 28:9 asks for the blessing and guidance of the people of God, Matthew 5:44 encourages love and prayer for even enemies, extending beyond just the divine people.
Matthew 5:44: But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
Contradiction with Proverbs 24:17
Psalms 28:9 focuses on blessings for God’s people, while Proverbs 24:17 advises not to rejoice when enemies fall, which contrasts the focus from God’s people to all individuals including adversaries.
Proverbs 24:17: Rejoice not when thine enemy falleth, and let not thine heart be glad when he stumbleth:
Contradiction with Isaiah 48:22
Psalms 28:9 asks for peace upon God's people, whereas Isaiah 48:22 states there is no peace for the wicked, highlighting opposition between the blessed and the wicked.
Isaiah 48:22: [There is] no peace, saith the LORD, unto the wicked.
Contradiction with Jeremiah 7:16
Unlike Psalms 28:9 which expresses a prayer for God's people, Jeremiah 7:16 tells not to pray for certain people, marking a limitation on the universality of prayers mentioned in Psalms.
Jeremiah 7:16: Therefore pray not thou for this people, neither lift up cry nor prayer for them, neither make intercession to me: for I will not hear thee.
Contradiction with Ezekiel 18:32
Psalms 28:9 seeks welfare for God's people, yet Ezekiel 18:32 speaks to God’s desire for all to turn from their ways and live, expanding the scope from a specific people to all individuals.
Ezekiel 18:32: For I have no pleasure in the death of him that dieth, saith the Lord GOD: wherefore turn [yourselves], and live ye. [yourselves: or, others]