Psalm 50:16 rebukes the wicked who recite God's statutes insincerely — same theme of false speech as in Psalm 78:36.

Psalm 106:12 describes Israel genuinely believing and praising, contrasting with the flattery in Psalm 78:36.

Psalm 33:1 calls for joyful praise from the upright — contrasting with the insincere flattery in Psalm 78:36.

Psalm 119:118 says God spurns those who stray, their cunning is vain — related to deceitful flattery in Psalm 78:36.

Deuteronomy 5:29 expresses God's desire for a faithful heart, directly contrasting the lip service in Psalm 78:36.

Isaiah 29:13 condemns lip service while hearts are far, exactly mirroring the flattery and lies in Psalm 78:36.

Ezekiel 33:31 describes people who hear but don't obey, with lustful talk — similar insincere flattery as in Psalm 78:36.

Hosea 11:12 accuses Ephraim of surrounding God with lies and deceit — directly parallel to the flattery and lies in Psalm 78:36.

Isaiah 59:13 confesses speaking lying words and denying God — directly parallel to the flattery and lies in Psalm 78:36.

Isaiah 63:8 records God's hope that His people would not deal falsely — contrasting with their actual flattery and lies in Psalm 78:36.

Jeremiah 3:10 describes Judah's pretense—not returning with whole heart—mirroring the flattery and lying lips of Psalm 78:36.

Acts 8:21 exposes a heart not right before God—similar to the flattering but lying mouths in Psalm 78:36, where outward words don't match inner truth.