Duplicitous

Proverbs 11:3

The integrity of the upright shall guide them: but the perverseness of transgressors shall destroy them.

Proverbs 29:5

A man that flattereth his neighbour spreadeth a net for his feet.

Psalms 12:2

• Heart
• Speak
• Vanity

They speak vanity every one with his neighbour: with flattering lips and with a double heart do they speak.

Proverbs 28:23

He that rebuketh a man afterwards shall find more favour than he that flattereth with the tongue.