Proverbs 6:12-19 A naughty person, a wicked man, walks with a froward mouth. He winks with his eyes, he speaks with his feet, he teaches with his fingers; Frowardness is in his heart, he devises mischief continually; he soweth discord. Therefore shall his calamity come suddenly; suddenly shall he be broken without remedy. These six things does the LORD hate: yea, seven are an abomination unto him: A proud look, a lying tongue, and hands that shed innocent blood, An heart that devises wicked imaginations, feet that be swift in running to mischief, A false witness that speaks lies, and he that sows discord among brethren. 

‘Naughty’ [Hebrew: beliya‛al] worthless or wicked; a man of Belial; a good-for-nothing. His seven sins (6:12-15): Froward (perverse) speech (cp. 6:17). Winks with his eyes (cp. 6:17). Speaks with his feet (cp. 6:18). Teaches with his fingers (cp. 6:17). Frowardness (deceitfulness) of heart (cp. 6:18). Continual plots, schemes, and plans of sin (cp. 6:18). Sows discord in families, communities, or nations (cp. 6:19).

Points 2 through 4 refer to sign language used to convey evil intentions and sinful practices of partners in sin.

‘Therefore shall his calamity come suddenly.’ Judgment will suddenly overtake the one who commits the seven sins of Proverbs 6:12-14 and the seven sins of verses 16-19.

‘An abomination unto him.’ Twenty things that are an abomination to God: The froward man [Hebrew: luwz] perverse; one who turns aside (3:32; 11:20). A proud look (6:16-17). A lying tongue (6:17; 12:22). Hands that shed innocent blood. A wicked scheming heart (6:18). Feet quick to sin. A false witness that speaks lies (6:19). A sower of discord. Wickedness (8:7). A false balance (scale, 11:1). Sacrifice of the wicked (15:8; 21:27). The way of the wicked (15:9). The thoughts of the wicked (15:26). The proud of the heart (16:5). Justifying the wicked (17:15). Condemning the just. Diverse weights (20:10, 23). Diverse measures. Refusing to hear the law (28:9). Prayer of the rebel.