Psalm 12:2

They lie to one another; they speak with flattering lips and a double heart.
BSB · Berean Standard Bible
They speak vanity every one with his neighbour: with flattering lips and with a double heart do they speak.

Note a double…: Heb. an heart and an heart

KJV · King James Version
Everyone lies to his neighbor. They speak with flattering lips, and with a double heart.
WEB · World English Bible
They speak falsehood every one with his neighbor: With flattering lip, and with a double heart, do they speak.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

They
Psalm 10:7; Psalm 36:3, 4; Psalm 38:12; Psalm 41:6; Psalm 52:1–4; Psalm 59:12; Psalm 144:8, 11; Jeremiah 9:2–6, 8
flattering
Psalm 5:9; Psalm 28:3; Psalm 62:4; Proverbs 20:19; Proverbs 29:5; Ezekiel 12:24; Romans 16:18; 1 Thessalonians 2:5
a double heart
Heb. an heart and an heart.
1 Chronicles 12:33; James 1:8