Jeremiah 9:5 expands on neighbors deceiving and lying — reinforcing the same pattern of deceit described here.

Jeremiah 9:3 also portrays the tongue as a bow shooting lies — echoing the deceitful speech and false peace here.

Psalm 64:3 says they whet tongues like swords and aim bitter words like arrows — directly parallels the deadly arrow tongue here.

Matthew 26:49 shows Judas acting out the kiss, embodying the 'mouth speaks peace, heart plans harm' described in Jeremiah.

Matthew 26:48 has Judas using a kiss as a betrayal signal, a NT fulfillment of the deceitful greeting pattern.

Proverbs 26:24-26 warns of enemies who disguise with lips and harbor deceit, matching Jeremiah's call to examine hearts.

Psalm 120:3 directly asks what God will do to a deceitful tongue, mirroring the judgment implied in Jeremiah.

Psalm 64:8 shows God turning the deceitful tongue back on the wicked, echoing the 'deadly arrow' image with divine retribution.

Psalm 64:4 depicts shooting from ambush — mirroring the planned ambush in the heart described here.

Psalm 57:4 says tongues are sharp swords — similar to the deadly arrow imagery for deceitful speech here.

Psalm 55:21 contrasts smooth speech with war in the heart, directly paralleling the 'tongue as arrow' theme.

Psalm 28:3 describes those who speak cordially but harbor malice, nearly identical to Jeremiah's portrayal.

Psalm 12:2 describes everyone uttering lies with flattering lips — mirroring the deception and ambush in the heart here.

2 Samuel 20:10 continues the same episode, with the stabbing after the deceitful kiss, reinforcing the deadly outcome.

2 Samuel 20:9 shows Joab's feigned brotherly kiss before killing Amasa, again illustrating the deceitful tongue.

2 Samuel 3:27 records Joab's deceitful greeting and murder of Abner, a concrete example of the 'speak peace but plot harm' pattern.

1 Samuel 18:21 shows Saul's deceitful offer of his daughter as a snare — parallels the treacherous speech from the heart in Jeremiah 9:8.

Psalm 52:3 describes loving lying over righteousness — directly parallels the deceitful speech and heart treachery in Jeremiah 9:8.

Proverbs 25:18 compares false witness to a sharp arrow — same imagery as Jeremiah's 'tongue is an arrow' for deceitful speech.

Micah 6:12 also condemns deceitful speech and lies among the people — mirrors the indictment in Jeremiah 9:8.

Job 15:5 accuses Job of choosing a crafty tongue — echoes the theme of deceitful speech in Jeremiah 9:8.